Term
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Definition
| two figures have the same shape and size |
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Term
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Definition
| two figures have the same shape |
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Term
| line symmetry/ reflection symmetry |
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Definition
| if a figure can be divided into two identical parts, there can be more than one line of symmetry |
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Term
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Definition
| bisects a line segment into two shorter segments of equal length |
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Term
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Definition
| one-dimensional system n which points hav a single cordinate |
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Term
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Definition
| two-dimensional system in which points have two coordinates |
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Term
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Definition
| m, rise/ run= y2- y1/ x2- x1 |
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Term
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Definition
| coplanar lines that do not intersect |
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Term
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Definition
| if the two slopes' product is equl to -1 |
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Term
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Definition
| the length around a figure |
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Term
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Definition
| the amount of area in an figure |
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Term
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Definition
| if two angles share a common vertex and side, but have no common interior points |
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Term
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Definition
| is a segment, ray, line, or plane that intersects a segment at its midsegment |
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Term
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Definition
| a ray that divides the angle into two congruent angles |
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Term
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Definition
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Term
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Definition
| the "if" in the if- then statement |
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Term
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Definition
| the "then" in the if- then statement |
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Term
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Definition
| interchanging the hypothesis and the conclusion of a conditional statement |
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Term
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Definition
| the hypothesis is true and the conclusion is not |
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Term
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Definition
| if the statement is equivalent to the conditional statement and the converse, using "if and only if" |
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| if a= b and c doesn't =0, then a/ c= b/c |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| if a= b and b= c, then a=c |
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Term
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Definition
| if a= b, then a may be substituted for b in an equation or and expression |
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Term
| reflexive property of congruence |
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Definition
| any geometric object is congruent to itself |
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Term
| symmetric property of congruence |
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Definition
| if one geometric object is congruent to a second, and the second object is congruent to the first |
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Term
| trnsitive property of congruence |
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Definition
| if one geometric object is congruent to a second, and the second object is congruent to a third, then the first object is congruent to the third object |
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Term
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Definition
| if two angles' sides form two pairs of opposite rays |
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Term
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Definition
| if two adjacent angles' noncommon sides are opposite rays |
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Term
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Definition
| if two angles' sum of their measures is 90 degrees |
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Term
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Definition
| if two angles' sum of measures is 180 degrees |
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Term
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Definition
| are coplanar and have exactly one point in common |
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Term
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Definition
| intersecting lines meeting at a right angle, they are perpendicular |
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Term
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Definition
| two lines that do not lie in the same plane |
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Term
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Definition
| the hypothesis and the conclusion both become negative |
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Term
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Definition
| the negation of the converse |
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Term
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Definition
| a line that intersects two or more coplanar lines at different points |
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Term
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Definition
| a quantity that has both magnitude and a diretion |
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Term
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Definition
| has three congruent sides |
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Term
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Definition
| has two or more congruent sides |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| if all angles of an acute triangle are congruent |
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Term
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Definition
| has exactly one right angle |
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Term
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Definition
| has exactly one on=btuse angle |
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Term
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Definition
| the sides of the traingle that form the right angle |
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Term
| hypotenuse of a right angle |
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Definition
| the side opposite the right angle |
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Term
| legs of an isosceles triangle |
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Definition
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Term
| base of an isosceles triangle |
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Definition
| the third side of the triangle that isn't congruent to the other two sides |
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Term
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Definition
- ASA
- SAS
- SSS
- AAS
not
- AAA
- SAA |
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Term
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Definition
| corresponding parts of congruent triangles are congruent |
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Term
| perpendicular bisector of a triangle |
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Definition
| a segment that bisects one side of the triangle |
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Term
| angle bisector of a triangle |
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Definition
| a segment that bisects one of the angles of the triangle |
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Term
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Definition
| a segment whose endpoints are a vertex and the midpoint of the other side |
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Term
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Definition
| a segment from a vertex that is perpendicular to the opposite side or to the line containing the opposite side |
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Term
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Definition
| the concurrent point of perpendicular bisectors, equidisdant from all the vertices |
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Term
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Definition
| concurrent point of the angle bisectors, equidistant from the three sides of the triangle |
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Term
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Definition
| concurrent point of the medians, two- thirds of the distance from each vertex to the midpoint of the opposite side |
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Term
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Definition
| concurrent point of the altitudes |
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Term
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Definition
| connects the midpoints of two sides of a triangle |
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Term
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Definition
| a plane figure that is formed by three or more segments called sides |
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Term
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Definition
| if no line that contains a side of the polygon contains a point in the interior of the polygon |
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Term
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Definition
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Term
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Definition
| a segment that joins two nonconsecutive vertices |
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Term
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Definition
| if a polygon is equilateral and equiangular |
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Term
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Definition
| quadrilateral with two pairs of parallel opposite sides |
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Term
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Definition
| a parallelogram that has all four sides congruent |
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Term
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Definition
| a parallelogram that has four right angles |
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Term
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Definition
| a parallelogram that is both a rectangle and a rhombus |
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Term
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Definition
| a quadrilateral that has exactly one pair of opposite sides that are parallel |
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Term
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Definition
| the legs of the trapezoid are congruent |
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Term
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Definition
| a quadrilateral that has two pairs of consecutive congruent sides, but opposite sides are not congruent |
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