Understanding and Using a Protractor

This video tutorial by Mr. J covers how to measure and draw angles using a protractor. It begins with an introduction to the topic, followed by detailed steps for measuring angles, including lining up the protractor and reading the correct angle. The video explains the significance of tick marks on a protractor and provides examples of measuring various angles. It then transitions to drawing angles, offering a step-by-step guide and examples to illustrate the process. The tutorial aims to equip viewers with the skills to accurately measure and draw angles using a protractor.

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

• Align the baseline with the angle's arm

• Align the center point with the vertex

• Read the angle measurement

• Draw a straight line

Tags

CCSS.4.MD.C.6

How can you determine if an angle is obtuse when using a protractor?

• It measures less than 90°

• It measures exactly 90°

• It measures more than 90°

• It measures exactly 180°

Tags

CCSS.4.MD.C.6

When measuring an angle, what should you do if the baseline is on the outside track?

• Use both inside and outside numbers

• Ignore the baseline

• Use the outside numbers

• Use the inside numbers

Tags

CCSS.4.MD.C.6

What is the purpose of the tick marks on a protractor?

• To indicate degrees between numbers

• To measure the length of lines

• To mark the center point

• To help draw straight lines

Tags

CCSS.4.MD.C.6

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

• Align the protractor with the baseline

• Draw the first arm of the angle

• Draw the second arm of the angle

• Mark the correct measurement

Tags

CCSS.4.MD.C.6

How do you ensure the correct angle measurement when drawing an angle?

• Mark the correct degree on the protractor

• Use the inside numbers only

• Use the outside numbers only

• Draw a random line

Tags

CCSS.4.MD.C.6

What should you do after marking the correct measurement when drawing an angle?

• Measure the angle again

• Erase the first arm

• Draw the second arm by connecting the dots

• Re-align the protractor

Tags

CCSS.4.MD.C.6

Which of the following is NOT a step in drawing an angle with a protractor?

• Measure the angle using a ruler

• Draw the first arm

• Mark the correct degree

• Align the center point with the vertex

Tags

CCSS.4.MD.C.6

How do you identify the correct 60° mark when drawing an angle?

• Use the mark closest to the baseline

• Use the outside track numbers

• Use the inside track numbers

• Choose any 60° mark

Tags

CCSS.4.MD.C.6

What is the final step in drawing an angle using a protractor?

• Label the angle

• Erase the protractor marks

• Draw arrows on the arms

• Align the protractor again

Tags

CCSS.4.MD.C.6