Angles

Which angle shows less than 90°?

• Diagram of an angle

• Diagram of an angle

• Diagram of an angle

Dani lays a notebook flat on a table and opens it as shown. How many degrees does the open notebook measure?

• 45°

• 90°

• 180°

• 360°

Select all the 2-D figures that do not have right angles.

• Figure A

• Figure B

• Figure C

• Figure D

• Figure E

Which correctly describes the angles that appear in the picture?

• 1 acute, 1 right, and 2 obtuse

• 1 acute, 2 right, and 1 obtuse

• 2 acute, 2 right, and 0 obtuse

• 4 acute, 0 right, and 0 obtuse

What is the measure of the unknown angle in degrees?

• 25°

• 75°

• 90°

• 270°

Which is the estimate for the angle measure below?

• 45°

• 80°

• 125°

• 180°

What is the measure of angle C, in degrees?

• 38°

• 40°

• 120°

• 142°

What is the measure of angle E, in degrees?

• 175°

• 165°

• 25°

• 15°

What is the measure of the unknown angle?

• 21°

• 22°

• 82°

• 159°

Shiloh is adding angles together to create a 170° angle. Select all possible angle measures.