Transcript Geometry Sections 6.4 and 6.5

Geometry
Sections 6.4 and 6.5
Prove Triangles Similar by AA
Prove Triangles Similar by SSS and
SAS
Angle-Angle (AA) Similarity
Postulate
• If two angles of one
triangle are
congruent to two
angles of another
triangle, then the
two triangles are
similar
Examples
• Page 384
• Problems # 3-8, 9, 11
Side-Side-Side (SSS) Similarity
Theorem
• If the corresponding
side lengths of two
triangles are
proportional, then
the triangles are
similar
Side-Angle-Side (SAS) similarity
Theorem
• If an angle of one
triangle is congruent
to an angle of a
second triangle and
the lengths of the
sides including these
angles are
proportional, then
the triangles are
similar
Examples
• Page 392
• Problems # 5, 7, 11
Assignment
•
•
•
•
•
Sections 6.4 and 6.5
Page 384
Problems # 10-14 even, #34
Page 392
Problems #6, 8, 10, 18-23