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Geo Conjectures
N/A
20
Mathematics
8th Grade
10/10/2011

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Term
linear pair conjecture
Definition
if two angles are a linear pair, then they are supplementary
Term
vertical angle conjecture
Definition
if two angles are vertical they are congruent
Term
corresponding angle conjecture
Definition
if two parallel lines are cut by a transversal, then the corresponding angles are congruent
Term
alternate interior angles conjecture
Definition
if two parallel lines are cut by a transversal, then the alternate interior angles are congruent
Term
alternate exterior angle conjecture
Definition
if two parallel lines are cut by a transversal, then the alternate interior angles are congruent
Term
converse of corresponding angle conjectur
Definition
if corresponding angles are congruent when two angles are cut by a transversal, then the lines are parallel
Term
coordinate midpoint conjecture
Definition
x+x/2, y+y/2
Term
slope of a line conjecture
Definition
y-y/x-x
Term
parallel slope conjecture
Definition
in a coordinate plane, two distinct lines are parallel IFF the slopes are the same
Term
perpendicular slope conjecture
Definition
in a coordinate plane, two lines are perpendicular IFF the slopes are opposite and reciprical
Term
triangle sum conjecture
Definition
the sum of all the angles in a triangle is equal to 180
Term
third angle conjecture
Definition
if two angles of one triangle are congruent to two angles of another triangle, then the triangles' third angle is congruent
Term
isosceles triangle conjecture
Definition
if a triangle is isosceles, then the base angles are congruent
Term
converse of isosceles triangle conjecture
Definition
if a triangle has two congruent angles, then the triangle is isosceles
Term
equilateral triangle conjecture
Definition
an equilateral triangle is equiangular
Term
converse of equilateral triangle conjecture
Definition
an equiangular triangle is equilateral
Term
converse of equilateral triangle conjecture
Definition
an equiangular triangle is equilateral
Term
side-angle inequality conjecture
Definition
in a triangle, the longest side is opposite the angle with the biggest measure, and the shortest side is opposite the smallest measure
Term
triangle inequality conjecture
Definition
the sum of the lengths of any two sides of a triangle are greater than the length of the opposite side
Term
triangle exterior conjecture
Definition
the measure of an exterior angle of a triangle is equal to the sum of the remote interior angles
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