Measuring Angles with a Protractor

What is an angle formed by?

• Two lines intersecting at a midpoint

• Two rays sharing an endpoint

• Two parallel lines

• A circle divided into equal parts

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

How many degrees are there in a full circle?

• 180 degrees

• 360 degrees

• 100 degrees

• 90 degrees

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What is the shape of a protractor?

• Full circle

• Triangle

• Half circle

• Square

Tags

CCSS.4.MD.C.6

How many zero points does a protractor have?

• Two

• One

• Four

• Three

Tags

CCSS.4.MD.C.6

What does each part on a protractor represent?

• Five degrees

• Ten degrees

• One degree

• One radian

Tags

CCSS.4.MD.C.6

Where should the center point of the protractor be placed?

• Anywhere on the protractor

• On the vertex of the angle

• Outside the angle

• On the midpoint of one ray

Tags

CCSS.4.MD.C.6

How do you determine the number of degrees in an angle using a protractor?

• Estimating visually

• Counting the spaces between the rays

• Measuring the length of the rays

• Aligning and counting from the zero point

Tags

CCSS.4.MD.C.6

What is the correct way to align a protractor to measure an angle?

• Placing it next to the angle

• Aligning the zero point with one ray

• Aligning the 180 point with one ray

• Covering the angle completely

Tags

CCSS.4.MD.C.6

How can you measure an angle larger than a right angle?

• Using two protractors

• Starting from zero and counting up

• Starting from 180 and counting backwards

• It cannot be measured with a protractor

Tags

CCSS.4.MD.C.6

What mistake should be avoided when aligning a protractor to measure an angle?

• Not aligning the protractor correctly

• Placing the center point correctly

• Starting counting from zero

• Aligning it upside down

Tags

CCSS.4.MD.C.6