Term
|
Definition
|
|
Term
|
Definition
| a line is perfectly straight and extends forever in both directions |
|
|
Term
|
Definition
| a plane is a perfectly flat surface that extendss forever in all directions |
|
|
Term
|
Definition
| a segment , or line segment , is the part of a line between two points |
|
|
Term
|
Definition
| a ray is part of a line that starts at one point and extends forever in one direction |
|
|
Term
|
Definition
| an angle (<) is formed by two rays with a common endpoint called the vertex |
|
|
Term
|
Definition
| a right angle is an angle that measures to be 90 degrees |
|
|
Term
|
Definition
| an acute angle is an angle that measure to be less than 90 degrees |
|
|
Term
|
Definition
| a obstuse angle is an angle that measures greater than 90 degrees |
|
|
Term
|
Definition
| complementary angles have measures that add up to 90 degrees |
|
|
Term
|
Definition
| supplementary angles have measures that add up to 180 degrees |
|
|
Term
|
Definition
| supplementary angles have measures that add up to 180 degrees |
|
|
Term
|
Definition
| figures that have the same size and shape |
|
|
Term
|
Definition
| a pair of opposite cingruent angles formd by intersecting lines |
|
|
Term
|
Definition
| the angle measures of a triangle in a plane add up to be 180 degrees |
|
|
Term
|
Definition
|
|
Term
|
Definition
| 3 congruent sides and angles |
|
|
Term
|
Definition
| 2 congruent sides and angles |
|
|
Term
|
Definition
| no congruent sides or angles |
|
|
Term
|
Definition
| a closed plane figure formed by three or more segments |
|
|
Term
|
Definition
| all the sides and angles are equal |
|
|
Term
|
Definition
| has 1 pair of parallel sides |
|
|
Term
|
Definition
| has 2 pair if parallel sides |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| has 4 sides and 4 right angles |
|
|
Term
|
Definition
| angles formed by a transversal cutting two or more lines taht are in the same relation |
|
|
Term
|
Definition
| a pair of angles on the inner sides cut by the transversal |
|
|
Term
|
Definition
| a pair of angles on the outer sides cut by the transversal |
|
|
Term
|
Definition
| a transversal is a line that intersects any two or more other lines |
|
|
Term
|
Definition
| perpendicular lines are lines taht intersect and make a 90 degrees angle |
|
|
Term
|
Definition
| parallel lines are two lines in a plane that never meet |
|
|
Term
|
Definition
| slope is a number that describes how steep a line is. |
|
|
Term
|
Definition
|
|
Term
|
Definition
|
|
Term
|
Definition
| a correspondence is a way of matching up two sets of odjects |
|
|
Term
|
Definition
| translations, rotations,a dn reflections are types of transformations |
|
|
Term
|
Definition
| a translation slides a figure along a line with out turning |
|
|
Term
|
Definition
| a rotation turns the figure aroingf a point , called the center of rotation |
|
|
Term
|
Definition
| the center of rotation is the point that the figure rotations around |
|
|
Term
|
Definition
| a reflection flips the figure across a line to create a mirror image |
|
|
Term
|
Definition
| the resultiong figure or image of a translation, rotation, or reflection is congruent to the orignal firgure |
|
|
Term
|
Definition
| a repeating pattern of plane figures that completely covers a plane with no gaps or overlaps is a tessellation |
|
|
Term
|
Definition
| a figure has a line symmetry if you can draw a line throught it so that the two sides are mirror images other of each other |
|
|
Term
|
Definition
| the line is called the line of symmetry |
|
|
Term
|
Definition
| where the figure can rotate around the same point and coincides with itself |
|
|
Term
|
Definition
| a regular polgon is repeated to fill a plane |
|
|
Term
|
Definition
| two or more regular polygons are repeated to fill the plane and the verticles are all identical |
|
|
Term
|
Definition
|
|
