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You should use a special device for measuring angles - a protractor. With a ruler, it is much more complicated, but still possible: you can mark two points on the angle, one on each side; measure the distance from the vertext of the angle to those points; measure the distance between the points; then use the Law of Cosines to calculate the angle.
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Earn +20 ptsQ: How do measure an angle with a ruler?
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Devices to measure?
1. Ruler (length, height, width) 2. Meter Stick (length, height, width) 3. Protractor (angle)
In triangle ABC the measure of angle B is 40 less than the measure of angle A the measure of angle C is 20 more than twice the measure of angle A what is the measure of angle C?
A = 60 B = 20 C = 140 This can have a large number of answers.
What is the analogy for ruler?
measure
What in the measure of the third angle of a triangle if one angle measure 80 and the other measure 45?
55°
What is the angle measure of 50?
An acute angle
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