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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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Fill in the blanks with acute, obtuse, right or straight:
When the sum of the measures of two angles is that of a straight angle, and if one of them is acute then the other should be ______.
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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?
A 360° rotation is equivalent to how many straight angles (180°)?
A straight angle is geometrically equivalent to which fraction of a full circle rotation?
