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22 Cards in this Set
 Front
 Back
equilateral triangle

A triangle with all sides congruent.


isosceles triangle

A triangle with at least two sides congruent.


scalene triangle

A triangle with no sides congruent.


acute triangle

A triangle with tree acute angles.


equiangular triangle

A triangle with all angles congruent.


right triangle

A triangle with one right angle.


obtuse triangle

A triangle with one obtuse angle.


vertex of a triangle

each of the three points joining the sides of a triangle


adjacent sides of a triangle

two sides of a triangle with a common vertex


legs of a right triangle

in a right triangle, the sides the form the right angle


hypotenuse

In a right triangle the side opposite the right angle. The other two sides are called legs.


legs of an isosceles triangle

The two congruent sides. The third side is the base.


base of an isosceles triangle

the noncongruent side of an isosceles triangle that had only two congruent sides


interior angle

the angles inside the shape


exterior angle

the angles outside the shape


corollary

A statement that can be proved easily by applying the theorem.


congruent

there is a correspondence between their angles and sides


corresponding angles

Two angles in corresponding positions relative to two lines.


corresponding sides

congruent sides


base angles

the two angles adjacent to the base


vertex angle

the angle opposite the base


coordinate proof

a type of proof that involves placing geometric figures in a coordinate planes
