Exploring Protractor and Angle Addition Postulates

What are the two main postulates discussed in this tutorial?

• Protractor and Segment Addition Postulates

• Pythagorean and Segment Addition Postulates

• Protractor and Angle Addition Postulates

• Pythagorean and Angle Addition Postulates

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What is the common point where two rays meet called?

• Endpoint

• Vertex

• Angle

• Intersection

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How many angles are there in the diagram with points W, X, Y, and Z?

• One

• Three

• Two

• Four

Why can't Noah refer to the diagram with three angles as just 'angle H'?

• Because there are multiple angles sharing the vertex H

• Because H is not a vertex

• Because H is a straight angle

• Because H is not labeled

When using a protractor, where should the vertex of the angle be placed?

• At the edge of the protractor

• At the center of the protractor

• At the zero mark of the protractor

• At the 90-degree mark of the protractor

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If the bottom ray of an angle extends to zero on the top row of a protractor, which scale should you read?

• Top scale

• Right scale

• Left scale

• Bottom scale

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According to the protractor postulate, what is the measure of an angle if the rays extend to 140 and 15 degrees?

• 115 degrees

• 125 degrees

• 155 degrees

• 130 degrees

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What does the angle addition postulate state?

• The measure of an angle is always less than 90 degrees

• The measure of an angle is the difference between its rays

• The measure of an angle is the sum of the measures of its parts

• The sum of the measures of two angles is always 180 degrees

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Using the angle addition postulate, how would you find the measure of angle QRT if angle QRS is 15 degrees and angle SRT is 30 degrees?

• Multiply the measures of QRS and SRT

• Add the measures of QRS and SRT

• Subtract the measures of QRS and SRT

• Divide the measures of QRS and SRT

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If angle LMN is unknown, angle NMO is 53 degrees, and angle LMO is 85 degrees, what is the measure of angle LMN?

• 53 degrees

• 85 degrees

• 42 degrees

• 32 degrees

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