8th - 4.2 - Transformations of Angles

△ABC is reflected across the x-axis. Which two angles are congruent?

• A) ∠A and ∠C

• B) ∠A and ∠E

• C) ∠C and ∠D

• D) ∠C and ∠E

△ABC is rotated 90°. Which two angles are congruent?

• A) ∠A and ∠C

• B) ∠B and ∠E

• C) ∠C and ∠D

• D) ∠C and ∠F

What rigid transformation should be used to prove △ABC ≅ △XYZ?

• Reflection

• Rotation

• Translation

• None of the above

What rigid transformation should be used to prove △ABC ≅ △XYZ?

• A) Reflection

• B) Rotation

• C) Translation

• D) None of the above

△ABC is rotated 90°. Which two angles are equivalent?

• ∠A and ∠F

• ∠B and ∠D

• ∠B and ∠F

• ∠C and ∠D

If all the triangles below are the result of one or more rigid transformations, which of the following MUST be true?

• All corresponding line segments are congruent.

• All corresponding angles are congruent.

• All triangles have the same area.

• A, B, and C are all correct.

• Reflection

• Rotation

• Translation

• None of the above

A company is looking to design a new logo, which consists only of transformations of the angle below: Which logo meets the company's demand?

• A

• B

• C

• D (All of the above)

The angle ∠AOB is 45° and has been rotated 120° around point C. What is the measure of the new angle ∠XYZ?

• 30°

• 45°

• 90°

• 120°

Find the measure of ∠ABC.

• 110°

• 112°

• 142°

• 144°