Angles and Protractor Lesson

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

• Use a ruler to estimate the angle

• Place the protractor on the angle and guess the measurement

• Align one side of the angle with the zero line on the protractor and read the measurement where the other side crosses the protractor scale.

• Measure the length of the sides of the angle and add them together

Tags

CCSS.4.MD.C.6

If an angle measures 45 degrees, how would you draw it using a protractor?

• Use the 45-degree mark on the protractor to draw the angle.

• Use the 30-degree mark on the protractor to draw the angle.

• Use the 90-degree mark on the protractor to draw the angle.

• Use the 60-degree mark on the protractor to draw the angle.

Tags

CCSS.4.MD.C.6

What is the measure of a right angle?

• 45 degrees

• 180 degrees

• 270 degrees

• 90 degrees

Tags

CCSS.4.G.A.1

If an angle measures 120 degrees, how would you draw it using a protractor?

• Use a ruler to draw a line at a 120-degree angle.

• Place the protractor on the vertex of the angle and mark the 60-degree mark on the protractor.

• Draw the angle without using a protractor.

• Align the baseline of the protractor with one side of the angle and mark the 120-degree mark on the protractor.

Tags

CCSS.4.MD.C.6

What is the measure of a straight angle?

• 180 degrees

• 45 degrees

• 90 degrees

• 360 degrees

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

If an angle measures 30 degrees, how would you draw it using a protractor?

• Draw a 90-degree angle instead

• Draw a 180-degree angle

• Use the protractor to measure and draw a 30-degree angle.

• Use a ruler to draw the angle

Tags

CCSS.4.MD.C.6

What is the measure of an acute angle?

• More than 90 degrees

• Less than 90 degrees

• Greater than 180 degrees

• Equal to 90 degrees

Tags

CCSS.4.G.A.1

If an angle measures 150 degrees, how would you draw it using a protractor?

• Draw a 180-degree angle instead

• Use a protractor to measure and mark a 150-degree angle on a straight line.

• Draw a 90-degree angle instead

• Use a compass to draw a circle instead

Tags

CCSS.4.MD.C.6

What is the measure of an obtuse angle?

• An obtuse angle measures exactly 90 degrees

• An obtuse angle measures more than 180 degrees

• An obtuse angle measures between 90 degrees and 180 degrees.

• An obtuse angle measures less than 90 degrees

Tags

CCSS.4.G.A.1

If an angle measures 90 degrees, how would you draw it using a protractor?

• Align the baseline of the protractor with one side of the angle and mark the 90-degree mark on the protractor to draw the angle.

• Align the protractor with the vertex of the angle and mark the 180-degree mark on the protractor to draw the angle.

• Draw a circle with a compass and then randomly mark a point on the circle to represent a 90-degree angle.

• Use a ruler to draw a straight line and then estimate a 90-degree angle without using a protractor.

Tags

CCSS.4.MD.C.6