Estimate, Compare and Classify Angles

In the picnic picture, the sticks on the left plate form a wide angle. What type of angle is it?

• Acute angle

• Right angle

• Obtuse angle

• Reflex angle

In the picnic picture, a triangle is formed on the right plate. What is the name of this triangle?

• Equilateral triangle

• Isosceles triangle

• Scalene triangle

• Right triangle

Which items in the picnic picture are examples of angles or triangles? Select all that apply.

• An obtuse angle made with sticks on the left plate

• A right angle at the bend of the straw in the juice box

• An equilateral triangle outlined on the right plate

• A circle-shaped plate that makes an angle

In the straw diagram, what type of angle is labelled a?

• Acute angle

• Right angle

• Obtuse angle

• Reflex angle

In the straw diagram, which statement best describes the part labelled b?

• It is not an angle because it is curved.

• It is an acute angle.

• It is a right angle.

• It is a reflex angle.

The clocks show the angles formed by the minute and hour hands at different times. Which clock shows a right angle between its hands?

• Orange clock on the left

• Pink clock at the bottom

• Green clock on the right

The clocks show the angles formed by the minute and hour hands at different times. Which clock shows an acute angle between its hands?

• Orange clock on the left

• Pink clock at the bottom

• Green clock on the right

The clocks show the angles formed by the minute and hour hands at different times. Which clock shows a reflex angle between its hands?

• Orange clock on the left

• Pink clock at the bottom

• Green clock on the right

Which statement describes a reflex angle?

• An angle less than a right angle

• An angle equal to a straight angle

• An angle greater than a right angle but less than a straight angle

Lea and Sean each form an angle using sticks. What type of angle is x?

• Acute

• Right

• Obtuse

• Reflex