Geometry Unit Review

Mariela drew the smaller triangle first. Then she dilated the image to produce a larger triangle. Which algebraic expression best describes the dilation?

• (x,y) --> (2.5x, 2.5y)

• (x,y) --> (x+3, y+3)

• (x,y) --> (5x, 5y)

• (x,y) --> (x+5, y+5)

Tags

CCSS.HSG.CO.A.2

In the following drawing, Triangle A'B'C' is the image of Triangle ABC after a clockwise rotation. What was the degree of rotation?

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Quadrilateral QIEK is reflected across the line y = -x. What are the coordinates of E'?

• (-3, 3)

• (3, 3)

• (-3, -3)

• (3, -3)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Determine a capital letter that has 2 lines of symmetry.

Tags

CCSS.4.G.A.3

Determine what happens to figure ABCD if it is dilated by a scale factor 2.

• Not enough information

• Stays the same size

• Enlargement - Gets bigger

• Reduction - Gets smaller

Tags

CCSS.8.G.A.3

What happens to figure ABCD if it dilated by a scale factor between 0 and 1?

• Not enough information

• Size doesn't change

• Enlargement - Gets bigger

• Reduction - Gets smaller

Tags

CCSS.8.G.A.3

Which of the following describes the sequence of transformations shown?

• Reflect across the x-axis and then rotate -90 degrees around the origin

• Rotate -90 degrees around the origin and then translate down.

• Reflect across the x-axis and then reflect across the y-axis.

• Translate up and then rotate 90 degrees about the origin.

Tags

CCSS.8.G.A.3

The coordinates of the vertices of Triangle ABC are A(3,3) B(6,6) C(9,3).

Which of the following are the coordinates of the vertices of the transformed image using (5x, 2y)?

• A'(15,6) B'(30,12) C'(45,6)

• A'(1,1) B'(3,3) C'(6,1)

• A'(6,15) B'(12,30) C'(6,45)

• A'(7.5,7.5) B'(45,45) C'(65,7.5)

Tags

CCSS.7.G.A.1

What is the coordinate of B after being reflected over the y-axis and then rotated 270 degrees?

• (-3,-8)

• (-3,2)

• (-7, -6)

• (6,7)

Tags

CCSS.8.G.A.3

Which value of x will show that lines l and m are parallel?

• 20

• 22

• 24

• 25

Tags

CCSS.8.G.A.5