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Comparison of Angles using a Protractor

Two angles can be compared using a protractor.
Suppose we have to compare ∠AOB and ∠AOM,
then it is necessary to:
(a) determine the degree measure of ∠AOB
using a protractor.
(b) determine the degree measure of ∠AOM.
(c) compare the degree measure values thus
obtained.

Here, ∠AOM = 30° and ∠AOB = ∠BOM – ∠AOM
= 67° – 30° = 37°. Clearly, ∠AOB > ∠AOM.

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MAths connect

Vaidya is enjoying his time on the swing.

He notices that the greater the angle with which he starts swinging, the greater is the speed he achieves on his
swing. But where is the angle? Can you mark his starting position to show the angle?

Practice Time 2D

1. Find the degree measure of angles shown below.
(a) (b)

(c)

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