Triangle
Formula for a triangle
What is 1/2 base × height
A rectangle with four congruent sides
What is a Square
Less that 90 degrees in an angle
What is acute
The line outside the triangle that signifies height
What is Altitude
A seven sided figure name
What is Heptagon
Exactly 180 degrees
What is Straight Angle
A triangle with an angle that is more than 90 degrees
What is Obtuse
Name of a 12 sided figure
What is dodecagon
Two angles Added together equals 90 degrees
What is complementary
The two triangle congruence statements that do NOT complete a proof
What is Side-Side-Angle and Angle-Angle-Angle
Name of a 20 sided figure
What is icosagon
Two angles that intersect at their vertex and are congruent.
What is vertical angle