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12 Cards in this Set
 Front
 Back
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
