Desmos | Unit 1 Unit Test

The point (1, -3) is shown on the graph. What are the coordinates of the point after a reflection using the x-axis?

• (-1, -3)

• (1, 3)

• (3, -1)

• (-3, 1)

Tags

CCSS.8.G.A.3

CCSS.HSG.CO.A.5

Which of these sequences of transformations does NOT return a shape to its original position?

• Translate 3 units up, then 3 units down.

• Reflect over line p, then reflect over line p again.

• Translate 1 unit to the right, then 4 units to the left, then 3 units to the right.

• Rotate 120° counterclockwise around center C. Then rotate 120° counterclockwise around C again.

Tags

CCSS.8.G.A.3

Juan and Zahra each made a design using 5 circles. Select all of the true statements.

• The smallest circle in Juan's design is congruent to the smallest circle in Zahra's design.

• Juan’s design is congruent to Zahra’s design.

• If you translate Juan's design 14 units to the right, you get Zahra's design.

• Each circle in Juan's design has a congruent circle in Zahra's design.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Use translations, rotations, and/or reflections to explain how you know that polygon A is congruent to polygon B.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Is shape A congruent to shape B? Explain your reasoning using translations, rotations, and/or reflections.

• The shapes look congruent, but when shape 𝐴 is moved on top of shape 𝐵 with a 90° clockwise rotation and a translation, they do not match up.

• The shapes are congruent if you reflect and then translate.

• The shapes look congruent, but when shape 𝐴 is moved on top of shape 𝐵 with a 270° rotation and translation they do not match up

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Is shape A congruent to shape B? Explain your reasoning using translations, rotations, and/or reflections.

Tags

CCSS.8.G.A.2

CCSS.HSG.CO.B.6

Name a triangle that is congruent to triangle CBE.

• Triangle DEB

• Triangle BCA

• Triangle EFC

Tags

CCSS.8.G.A.2

What is the measure of angle CBE? Explain or show your thinking on your paper

• 72 degrees

• 90 degrees

• 120 degrees

• 60 degrees

Tags

CCSS.8.G.A.5