Understanding Protractors

The video tutorial by Mr. J explains how to read a protractor through five examples, covering both obtuse and acute angles. It provides detailed instructions on aligning the protractor, understanding tick marks, and determining the correct angle measurement. The video emphasizes using inside or outside numbers based on the angle type and offers tips for accurate readings.

What is the main focus of the video tutorial?

• How to solve algebraic equations

• How to read a protractor

• How to calculate area

• How to draw geometric shapes

When reading an obtuse angle, which number should you choose if the arm passes through 30° and 150°?

• 90°

• 150°

• 60°

• 30°

What do the smallest tick marks on a protractor represent?

• 15 degrees

• 1 degree

• 5 degrees

• 10 degrees

If an angle is less than 90°, what type of angle is it?

• Acute

• Right

• Obtuse

• Straight

Which track of numbers should be used for an angle with a 0° baseline on the inside?

• Neither track

• Inside numbers

• Outside numbers

• Both tracks

For an angle between 50° and 60° on the inside track, what is the measurement if it is on the 5° mark?

• 65°

• 60°

• 55°

• 50°

What is the measurement of an angle that is slightly greater than 90° and falls between 90° and 100° on the inside track?

• 97°

• 100°

• 92°

• 95°

Which type of angle is slightly greater than 90°?

• Acute

• Obtuse

• Reflex

• Right

What should you consider when choosing between two possible angle measurements on a protractor?

• The material of the protractor

• The size of the protractor

• The type of angle (acute or obtuse)

• The color of the protractor

What is the correct measurement for an angle that is exactly on the 1° mark between 95° and 100°?

• 98°

• 96°

• 95°

• 97°