4-7 Congruence in Overlapping Triangles

Objectives:
Identify congruent overlapping triangles.
Prove two triangles congruent using other congruent triangles.
G.SRT.5:
Use congruence…criteria to solve problems and
prove relationships in geometric figures.
AD
ACD  BDC
∆BDC
BD
LB
LAEC
∆AEC
DE
CE  DE
Prove 2
triangles
congruent.
Given
Reflexive Property
Given
SAS
Corresponding parts of congruent
triangles are congruent.
Reflexive Property
Corresponding parts of congruent
triangles are congruent.
SSS