Labelling and Measuring Angles

What is a common symbol used to denote an angle in geometry?

• A circle

• A dotted line

• A tilted L

• A straight line

In the angle notation ABC, which letter must be the vertex?

• Any letter

• C

• B

• A

Which of the following is NOT a correct way to label an angle with vertex B?

• CBA

• BAC

• ABC

• ACB

What is the correct way to label an angle with vertex A and arms extending to points B and C?

• BCA

• CAB

• ABC

• BAC

What does a tilted L symbol represent in geometry?

• A circle

• A line

• An angle

• A vertex

Tags

CCSS.4.G.A.1

Where should the center of the protractor be placed when measuring an angle?

• Anywhere on the paper

• Outside the angle

• On the midpoint of one arm

• On the vertex of the angle

Tags

CCSS.4.MD.C.6

What is the first step in measuring an angle using a protractor?

• Estimate the angle size

• Start reading from zero on the protractor

• Mark the angle with a pencil

• Align the protractor with one arm of the angle

Tags

CCSS.4.MD.C.6

If an angle measures 30 degrees using the inner scale of a protractor, what should it measure using the outer scale?

• 30 degrees

• 60 degrees

• 90 degrees

• 120 degrees

Tags

CCSS.4.MD.C.6

How can you verify the accuracy of an angle measurement?

• Guess the measurement

• Check the alignment of the protractor

• Use a calculator

• Measure with another protractor

Tags

CCSS.4.MD.C.6

Which of the following is a correct sequence for measuring an angle with a protractor?

• Place, read, align

• Place, align, read

• Read, place, align

• Align, place, read

Tags

CCSS.4.MD.C.6