Geometry Unit 4 Assessment (Dilations and Similarity)

A dilation has a scale factor of 3. Which statement is true?

• Lengths are divided by 3

• Lengths stay the same

• Lengths are multiplied by 3

• Angles are tripled

Tags

CCSS.8.G.A.3

What is the length of A'C'? The original right triangle has legs 3 and 4 with hypotenuse 5. Its image is a right triangle with legs 6 and 8 after a dilation. Find the image hypotenuse length.

• 5

• 8

• 10

• 12

Tags

CCSS.8.G.A.3

Which property is preserved under dilation?

• Length

• Area

• Perimeter

• Angle measure

Tags

CCSS.HSG.CO.A.2

Tags

CCSS.8.G.A.3

Based on the image, what is the scale factor of the dilation from the smaller triangle to the larger triangle?

• 2

• 3

Tags

CCSS.8.G.A.3

A point on the x-axis is dilated from the origin. Where will its image lie?

• On the y-axis

• On a diagonal line

• On the x-axis

• Anywhere on the plane

Tags

CCSS.8.G.A.3

The triangle shown is dilated from the origin by a scale factor of 3. What are the coordinates of the image of point J after the dilation?

Tags

CCSS.8.G.A.3

Two triangles are similar if

• All side lengths are equal

• Corresponding angles are equal

• Corresponding sides are equal

• The triangles overlap

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

• 1

• 7

• 12

• 16

Tags

CCSS.HSG.SRT.A.2

• Yes, because all corresponding angles are equal

• Yes, because two angles in each triangle are congruent

• No, because the triangles have different side lengths

• No, because only one angle in each triangle is congruent

Tags

CCSS.HSG.SRT.A.2