7 terms

Unit 3.6 The Isosceles Triangle Theorem

STUDY
PLAY
legs
two congruent sides of a triangle
vertex angle
angle formed by the two congruent sides.
base
side that is opposite to the vertex angle
base angles
angles that have base as an adjacent side.
AAS Congruence Criterion
If two angles and a non-included side of one triangle are congruent to the other angles and side respectively, then the triangles are congruent.
Isosceles Triangle Theorem
If the legs are congruent, then the triangle is an isosceles triangle (base angle are congruent).
Converse of the Isosceles Triangle Theorem
If the base angles are congruent, then the legs are congruent.
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