Matching
vertex - the endpoint of a line
pentagon - polygon with 5 sides
nonagon - polygon with 9 sides
polygon - a figure with at least three sides that are line segments and intersect exactly two other sides, one at each point
vertices - the plural of vertex
scalene triangle - no congruent sides lengths
exterior angles theorem - states that if the measure of an exterior angle in a triangle is equal to the sum measures of the two non adjacent interior angles
converse to corollary to base angles theorem - states that if a triangle has two congruent angles, then the sides opposite them are congruent
n-gon - polygon with n sides
right triangle - triangle with one right angle
exterior triangle - formed when a side of a triangle has been extended
equilateral triangle - triangle with three congruent side lengths
equilateral - a polygon where all sides are congruent
equiangular - a polygon where all angles are congruent
legs - the congruent sides of an isosceles triangle
included angle - the angle that is formed by two sides of a triangle
SAS Congruence Postulate - states that if two sides and an included angle of one triangle are congruent to two sides and an included angle of a second triangle, then the triangles are congruent
decagon - polygon with 10 sides
dodecagon - polygon with 12 sides
base angles theorem - states that if two sides of a triangle are congruent, then the angles opposite them (called base angles) are congruent
triangle - polygon with 3 sides
heptagon - polygon with 7 sides
diagonal - a line segment that connects two vertices that are not the actual sides of a polygon
edge - another term for the side of a polygon
regular - a polygon that has all congruent sides and congruent angles
obtuse triangle - triangle with one obtuse angle
