Measure and classify each angle: Angle Measure Type ∠ A O B

We measure ∠ A O B with a protractor and obtained ∠ A O B = 40 ° . We know, an angle that measures more than 0 ° and less than 90 ° is called an acute angle. Therefore, ∠ A O B is an acute angle. Angle Measure Type ∠ A O B 40 ° acute angle

Measure and classify each angle: Angle Measure Type ∠ A O C

We measure ∠ A O C with a protractor and obtained ∠ A O C = 130 ° . We know, an angle that measures more than 90 ° and less than 180 ° is called an obtuse angle. Therefore, ∠ A O C is an obtuse angle. Angle Measure Type ∠ A O C 130 ° obtuse angle

Measure and classify each angle: Angle Measure Type ∠ B O C

We measure ∠ B O C with a protractor and obtained ∠ B O C = 90 ° . We know, an angle that measures exactly 90 ° is called a right angle. Therefore, ∠ B O C is a right angle. Angle Measure Type ∠ B O C 90 ° right angle

Measure and classify each angle: Angle Measure Type ∠ D O C

We measure ∠ D O C with a protractor and obtained ∠ D O C = 90 ° . We know, an angle that measures exactly 90 ° is called a right angle. Therefore, ∠ D O C is a right angle. Angle Measure Type ∠ D O C 90 ° right angle

Measure and classify each angle: Angle Measure Type ∠ D O A

We measure ∠ D O A with a protractor and obtained ∠ D O A = 140 ° . We know, an angle that measures more than 90 ° and less than 180 ° is called an obtuse angle. Therefore, ∠ D O A is an obtuse angle. Angle Measure Type ∠ D O A 140 ° obtuse angle

Measure and classify each angle: Angle Measure Type ∠ D O B

We measure ∠ D O B with a protractor and obtained ∠ D O B = 180 ° . We know, an angle that measures exactly 180 ° is called a straight angle. Therefore, ∠ D O B is a straight angle. Angle Measure Type ∠ D O B 180 ° straight angle

E M B I B E

Foundation Course Mathematics>Chapter 5 - Understanding Elementary Shapes>NCERT Section>Q 9

MEDIUM

6th CBSE

IMPORTANT

Earn 100

Find the angle measure between the hands of the clock in the figure:

Important Questions on Understanding Elementary Shapes

EASY

6th CBSE

IMPORTANT

Foundation Course Mathematics>Chapter 5 - Understanding Elementary Shapes>NCERT Section>Q 10

Investigate.
In the given figure, the angle measures $30 °$ . Look at the same figure through a magnifying glass.
Does the angle become larger? Does the size of the angle change?

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