Exploring Angles and Protractor Usage

What is the degree measure of a right angle?

• 45 degrees

• 90 degrees

• 180 degrees

• 360 degrees

Tags

CCSS.4.G.A.1

Which type of angle is smaller than 90 degrees?

• Straight

• Right

• Acute

• Obtuse

Tags

CCSS.4.G.A.1

What type of angle is exactly 180 degrees?

• Obtuse

• Right

• Acute

• Straight

Tags

CCSS.4.G.A.1

Which angle is described as being larger than 90 degrees but less than 180 degrees?

• Straight

• Right

• Acute

• Obtuse

Tags

CCSS.4.G.A.1

What type of angle is formed when the angle measures exactly 90 degrees?

• Obtuse

• Acute

• Straight

• Right

Tags

CCSS.4.G.A.1

What is the main purpose of the bullseye on a protractor?

• To mark the center of the protractor

• To draw circles

• To identify the vertex of the angle

• To measure the length of the line

Tags

CCSS.4.MD.C.6

How do you properly align a protractor to measure an angle?

• Align the bullseye with the vertex of the angle

• Place the protractor outside the angle

• Align the flat edge with the vertex

• Align the bullseye with the midpoint of the line

Tags

CCSS.4.MD.C.6

What should you do if the protractor's zero line does not align with one of the angle's sides?

• Rotate the protractor until it aligns

• Measure from 100 degrees instead

• Use the other side of the protractor

• Guess the angle

Tags

CCSS.4.MD.C.6

When measuring an angle with a protractor, which side of the protractor should you read from?

• The side that counts up from zero

• The side that counts down from 180

• Any side

• The side that is more visible

Tags

CCSS.4.MD.C.6

What is the correct way to find the degree of an angle using a protractor when the lines are not clearly marked?

• Estimate the closest number

• Count backwards from 180

• Use the side that starts from zero and count up

• Align the protractor randomly

Tags

CCSS.4.MD.C.6