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12 Cards in this Set

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The side opposite the vertex angle in an isosceles triangle
Base
Abbreviation for 'corresponding parts of congruent triangles are congruent"
CPCTC
A theorem that follows directly from another theorem and that can easily be proved from that theorem
Corollary
A triangle with at least two congruent sides
Isosceles triangle
The two congruent sides of an isosceles triangle
Legs of an isosceles triangle
The angle opposite the base of an isosceles triangle
Vertex Angle
The theorem or postulate that states: If the sides of one triangle are congruent to the sides of another triangle, then the two triangles are congruent
SSS
The theorem or postulate that states: If two sides and their included angle in one triangle are congruent to two sides and their included angle in another triangle, then the two triangles are congruent
SAS
The theorem or postulate that states: If two angles and their included side in one triangle are congruent two angle angles and their included side in another triangle, then the two triangles are congruent
ASA
The theorem or postulate that states: If two angles an a nonincluded side of one triangle are congruent to the corresponding angles and nonincluded side of another triangle, then the triangles are congruent
AAS
The theorem or postulate that states: If the hypotenuse and a leg of a right triangle are congruent to the hypotenuse and corresponding leg of another right triangle, then the two triangles are congruent
HL
The theorem or postulate that states: If two sides of a triangle are congruent, then the angles opposite those sides are congruent
Isosceles Triangle Theorem