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Estimate the size of each angle , then classify each angle .

Estimate the size of each angle , then classify each angle .-example-1

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The first one looks a little over 90° so it can be 100°. it is an obtuse since it can't be a right. second one is over 100, a little less than 180, so it can be 170°. it is an obtuse, can't be a ray. third one is less than 90°, so it can be about 40 or 50°. this is an acute angle. hope this helps
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