Grade 7 | Unit 7 | Lesson 1: Relationships of Angles | Practice Problems

Draw a right angle. How do you know it's a right angle? What is its measure in degrees?

• 90 degrees

• 180 degrees

• 60 degrees

• 45 degrees

• 30 degrees

Draw a straight angle. How do you know it's a straight angle? What is its measure in degrees?

• 180 degrees

• 90 degrees

• 60 degrees

• 45 degrees

• 120 degrees

An equilateral triangle’s angles each have a measure of 60 degrees. Can you put copies of an equilateral triangle together to form a straight angle?

• Yes

• No

Can you put copies of an equilateral triangle together to form a right angle?

• Yes

• No

Here is a square and some regular octagons. In this pattern, all of the angles inside the octagons have the same measure. The shape in the center is a square. Find the measure of one of the angles inside one of the octagons.