Geometry
Dilations and Similarity Learning Targets
Dilations
A dilation is ______________________ that preserves the ____________
measures of a polygon, but multiples all side lengths by the same
___________________
Example of a dilated figure:
Similar Polygons
Example of two similar polygons:
Two polygons are similar if their corresponding angles _________________ and
corresponding side lengths are____________________
When a figure is dilated, each side length is multiplied by the same number.
Similar Triangles
Examples:
Similar Triangles by AA:
The shortcuts to determine if two triangles are similar are:__________________
AA: If two angles of one triangle are _____________ to two angles of another
triangle, then _____________________________
SSS: If the 3 sides one triangle are ________________ to the 3 sides of another
triangle, then the two triangles are __________________
Similar Triangles by SSS:
SAS: If two sides of one triangle are _______________ to two sides of another
triangle and the _____________________, then the triangles are____________
Similar Triangles by SAS:
Date:
Assignment:
Tuesday 1/20
Chapter 7 test
Dilations Worksheet
Thursday 1/22
Day 2 Homework worksheet
Tuesday 1/27
Day 3 Homework Worksheet
Thursday 1/29
Page 591 #1-9
Friday 1/30
Day 5 Homework Worksheet
Tuesday 2/3
Review
Thursday 2/5
Dilations and Similarity Test