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4.5-4.7

TermDefinition
ASA congruence postulate If two angles and the included side of one triangle are congruen to two angles and the included side of the a second triangle, then the two triangles are congruent
AAS congruence postulate If two angles and a non-included side of one triangle are congruent to two angles and the corresponding non included side of a second triangle, the the two triangles are congruent.
Flow Proof uses arrows to show the flow of a logical argument
CPCTC A pair of sides or angles that have the same relative position in two congruent or similar figures
Vertex angle The angle formed by the legs
Legs of an isosceles triangle The two congruent sides of an isosceles triangle that has only two congruent sides
Base of an isosceles triangle the non-congruent side of an isosceles triangle that has only two congruent sides
Base of angles of an isosceles triangle The two angles adjacent to the base
Base Angles Theorem If two sides of a triangle are congruent, then the angles opposite them are congruent If AB is congruent to AC, then Angle B is congruent to angle C
Converse of Base Angles Theorem If two angles of a triangle are congruent, then the sides opposite them are congruent
Corollary to the Base Angles Theorem If a triangle is equilateral, then its equiangular
Corollary to the Converse of the Base Angles Theorem If a triangle is equiangular, then it is equilateral
Created by: ltopp
 

 



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