1. Isosceles & Equilateral Triangles

2. Isosceles Triangle Theorem How would you say this in words?

3. Isosceles Triangle Theorem Two sides of a triangle are congruent if and only if the angles opposite them are congruent.

4. If 2 sides , then 2 angles . If 2 angles , then 2 sides .

5. The first part is sometimes stated as … The base angles of an isosceles triangle are congruent.

8. A line that bisects the vertex angle of an isosceles triangle is perpendicular to the base.

9. A triangle is equilateral if and only if it is equiangular.

10. Isosceles Triangle Theorem Equilateral  Equiangular