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

What is the common point where two rays meet called?

• Endpoint

• Vertex

• Angle

• Intersection

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

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

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

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

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

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