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Question
Find the measure of the angle shown in figure. (First estimate with your eyes and then find the actual measure with a protractor).
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Solution
On observing with eyes - 125°
On measuring with protractor - 130°
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Find the measure of the angle shown in figure. (First estimate with your eyes and then find the actual measure with a protractor).
Find the measure of the angle shown in figure. (First estimate with your eyes and then find the actual measure with a protractor).
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?
Measure and classify each angle :
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Angle |
Measure |
Type |
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∠AOB |
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∠AOC |
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∠BOC |
|
|
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∠DOC |
|
|
|
∠DOA |
|
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|
∠DOB |
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In the units table, what is the conversion for 1′ (one minute)?
A 360° rotation is equivalent to how many straight angles (180°)?
