Acute, Obtuse, Right Angle

This angle is:

• Smaller than a right angle

• A right angle

• Bigger than a right angle

Which angle is a right angle?

• An angle that is exactly 45 degrees

• An angle that is exactly 90 degrees

• An angle that is exactly 120 degrees

• An angle that is exactly 180 degrees

A square has four angles of equal size. What type of angles are these?

• Acute angles

• Obtuse angles

• Right angles

• Straight angles

Which of the following is NOT a property of a right angle?

• It measures 90 degrees.

• It is less than an obtuse angle.

• It forms a perfect square corner.

• It is more than 90 degrees.

In a triangle, if one angle measures 100 degrees, what type of angle is it?

• Acute angle

• Obtuse angle

• Right angle

• Straight angle

In the cartoon world, if a character looks up at the sky at an angle that is greater than 0 degrees but less than 90 degrees, this angle is known as:

• Obtuse angle

• Right angle

• Acute angle

• Straight angle

Determine if the angle is acute, obtuse, or straight
90º

• obtuse

• right

• acute

Using a protractor, you measure an angle and find it to be 150 degrees. How would you classify this angle?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

• Acute angle

• Obtuse angle

• Right angle

• Reflex angle

In the cartoon world, if a character opens a door wider than usual to let a giant cake inside, which of the following angles made by the door with the wall is classified as an obtuse angle?

• 85 degrees

• 95 degrees

• 90 degrees

• 180 degrees