Illustrative Math Unit 2 review (Similar figures and Slope)

• Dilations always increase the length of line segments.

• Dilations take perpendicular lines to perpendicular lines.

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

• Dilations increase the measure of angles.

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

Tags

CCSS.8.G.A.3

Which pair of triangles must be similar?

• Triangles 1 and 2 each have a 35 degree angle.

• Triangle 3 has a 50 degree angle and a 25 degree angle. Triangle 4 has a 50 degree angle and a 105 degree angle.

• Triangle 5 has a 30 degree angle and a 90 degree angle. Triangle 6 has a 30 degree angle and a 70 degree angle.

• Triangles 7 and 8 are both isosceles. They each have a 40 degree angle.

Tags

CCSS.HSG.SRT.A.2

• B

• C

• D

• E

• F

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Hint: Remember OD x SF = DD (find the scale factor)

• 8

• 12.5

• 2.68

• 0.67

Tags

CCSS.HSG.SRT.A.2

Find the length of EF.

• 0.67

• 2.01

• 12.01

• 4

Tags

CCSS.HSG.SRT.A.2

Find the slope of the line.

• 1/2

• 2

• 3

• 3/2

Tags

CCSS.8.EE.B.6

Which one of the following could be a coordinate for point C?

• (2, -2)

• (-4, -6)

• (6, 2)

• (0, 0)

Tags

CCSS.8.G.A.3

Which of these lines has a slope of 5/2?

• A

• B

• C

Tags

CCSS.8.EE.B.5