Unit 2 Dilations, Similarity and Intro to Slope

Unit 2 Dilation Study Guide

by Kimberli Darling

Multiple Select

What is true about dilation? Select all that apply.

• Dilations always decrease the length of line segments

• Dilations of an angle are congruent to the original angle.

• Dilations decrease the measure of angles.

• Dilations of a triangle are similar to the original triangle.

• Dilations of a triangle are always congruent to the original triangle.

Multiple Choice

Dilations of a triangle are ____________ the original triangle.

• congruent to

• similar to

• always the same as

• enlargement of

Multiple Choice

Dilations take perpendicular lines to perpendicular lines.

• Sometimes

• Always

• Never

Multiple Choice

Which pairs of triangles must be similar?

• Triangle A and B each have a 90 degree angle.

• Triangles C and D are both isosceles. They each have a 35 degree angle.

• Triangle E have measure angles of 40 and 90 degrees. Triangle F have measure angles of 40 and 80 degrees.

• Triangle G has a measure of 30 and 90 degrees. Triangle F has a measure of 90 degrees and 60 degrees.

Multiple Choice

Which lines have a slope of 1/4?

• A

• B

• C

• D

• E

Multiple Choice

Which lines have a slope of 1/3?

• A

• B

• C

• D

• E

Multiple Choice

Which lines have a slope of 2?

• A

• B

• C

• D

• E

Multiple Choice

Which lines have a slope of 3/2?

• A

• B

• C

• D

• E

Multiple Choice

Which lines have a slope of 1?

• A

• B

• C

• D

• E

Multiple Select

Which polygons have the same slope (Hint: make sure you are comparing the corresponding sides as it compares to polygon A before rise divided by run)? Select all that apply?

• A

• B

• C

• D

• E

Multiple Select

Which polygons are similar to A? Select all that apply?

• A

• B

• C

• D

• E