Unit 3 Triangles Flashcards

Front

A ray that divides an angle into two equal parts

Back

Angle Bisector

Front

A triangle with angles less than 90 degrees.

Back

Acute

Front

Two angles opposite the congruent sides in an isosceles triangle.

Back

Base Angles

Front

Figures that have the same shape and size.

Back

Congruent

Front

States the same thing as a theorem in the opposite direction

Back

Converse

Front

Triangle with equal angles.

Back

Equiangular

Front

Triangle with equal sides.

Back

Equilateral

Front

The angle formed by extending any one side of the triangle. An exterior is always equal to the sum of the two non-adjacent interior angles.

Back

Exterior Angles

Front

Theorem that states if two sides of a triangle are congruent, and the included angles are not congruent, then the longer third side is opposite that larger included angle

Back

Hinge Theorem

Front

A congruence theorem used ONLY in right triangles. If the hypotenuse and a leg of one right triangle is congruent to the hypotenuse and a leg of another right triangle, then the two triangles are congruent.

Back

Hypotenuse Leg