Download Geometry - Shelbyville CUSD #4

Geometry
Section 7-4
A Postulate for Similar Triangles
AA Similarity Postulate- If two angles of one triangle are congruent to
two angles of another triangle, then the triangles are similar.
1.
Given: AC // BD
Prove: AOC ~ BOD
2.
Given: AB  BF; RH  AF; <1  <2
Prove: HR  BF = BA  HA
3. In the diagram, LMN ~ PQN.
a.
Write the statement of proportionality.
b.
Find m<M and m<P.
c.
Find MN and QM.
d.
Why are the two triangles similar?
4. Explain why WVX ~ WZY.
5. Find EH.
6. Tell whether the triangles are similar or not.
a.
b.
c.
Classroom Exercises: p. 256 1-11
HW: p. 257-259 2-16 even, 22, 24
d.