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You can identify it by a letter from the alphabet of your choice. Conventionally, if using the Roman alphabet, an upper case (capital) letter is used, or even other symbols.
Alternatively, you can name it using the vertex of the angle and one point on each of the two rays forming the arms of the angle. In this case, the letter fr the vertex must be the middle letter. Thus, the angle PQR is formed where the ray PQ meets the ray QR. This is not the same as angle PRQ.
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How do you label a straight angle?
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How do you draw a complete angle?
You draw a single ray and label it twice: once for the incoming ray and again for the outgoing ray.
What is true of the measure of alternate interior angles?
use a full circle protractor to draw and label the following angle: toe:48 degrease
Can a right angle labeled def also be called fed?
Yes, as long as the label for the vertex stays in the middle, you can read it in any direction you want.
What is the proof that equiangular triangle is also called equilateral triangle?
Label the triangle ABC. Draw the bisector of angle A to meet BC at D. Then in triangles ABD and ACD, angle ABD = angle ACD (equiangular triangle) angle BAD = angle CAD (AD is angle bisector) so angle ADB = angle ACD (third angle of triangles). Also AD is common. So, by ASA, triangle ABD is congruent to triangle ACD and therefore AB = AC. By drawing the bisector of angle B, it can be shown that AB = BC. Therefore, AB = BC = AC ie the triangle is equilateral.
