Practice identifying right, acute, and obtuse angles using simple shapes, clocks, and real-world examples.
Read each problem carefully. Decide whether each angle is right, acute, or obtuse. Show your thinking in the space provided.
Identify angles by comparing them to a square corner
Math - Grade 2-3
- 1
An angle makes a perfect square corner, like the corner of a book. What type of angle is it?
- 2
An angle is smaller than a right angle. What type of angle is it?
- 3
An angle is wider than a right angle but not a straight line. What type of angle is it?
- 4
Look at the angle shown. It opens only a little bit. Is it right, acute, or obtuse?
- 5
Look at the angle shown. It opens wide, more than a square corner. Is it right, acute, or obtuse?
- 6
A door is opened just a little. The angle between the door and the wall is small. What type of angle is this?
- 7
A notebook page has four corners. What type of angle is each corner?
- 8
Look at the clock. The minute hand points to 12 and the hour hand points to 3. What type of angle do the hands make?
- 9
Look at the clock. The minute hand points to 12 and the hour hand points to 2. What type of angle do the hands make?
- 10
Look at the clock. The minute hand points to 12 and the hour hand points to 5. What type of angle do the hands make?
- 11
Draw one acute angle. Then write one sentence explaining why it is acute.
- 12
Draw one right angle. Then write one sentence explaining why it is right.
- 13
Draw one obtuse angle. Then write one sentence explaining why it is obtuse.
- 14
A triangle has one angle that is larger than a square corner. What type of angle is that angle?
- 15
Sort these angles into three groups: right angle, acute angle, and obtuse angle. Angle A is a square corner. Angle B is smaller than a square corner. Angle C is wider than a square corner.