Download Chapter 7: Similar Triangles Topic 5: Similar Triangle

Chapter 7: Similar Triangles
Topic 5: Similar Triangle Proofs & More
Recall: Three Methods to prove Triangles are Similar –
1)
If two angles of one triangle are congruent to two angles of another triangle, the triangles are similar.
If:
Then:
2)
If the three sets of corresponding sides of two triangles are in proportion, the triangles are similar.
If:
Then:
3)
If an angle of one triangle is congruent to the corresponding angle of another triangle and the lengths of
the sides including these angles are in proportion, the triangle are similar.
If:
Then:
PROOFS:
1. Given:
and
Prove:
2. Given:
Prove:
intersect at D
August 2015:
June 2015: