Subtract Angles

The video tutorial explains different types of angles, including acute, right, obtuse, straight, and full angles. It discusses how angles can be combined to form other angles, such as two right angles forming a straight angle or two straight angles forming a full circle. The tutorial also covers methods to calculate unknown angles using equations and subtraction, emphasizing the importance of knowing exact angle measures for practical applications in various occupations.

What is the measure of an obtuse angle?

• Less than 90 degrees

• Exactly 90 degrees

• Greater than 90 degrees and less than 180 degrees

• Exactly 180 degrees

How many right angles are needed to form a straight angle?

• One

• Two

• Three

• Four

How many right angles are equivalent to a full circle?

• Four

• Three

• Two

• Five

If a straight angle is made up of two angles, one measuring 70 degrees, what is the measure of the other angle?

• 120 degrees

• 110 degrees

• 100 degrees

• 90 degrees

A right angle is formed by combining two acute angles. If one angle is 15 degrees, what is the measure of the other angle?

• 70 degrees

• 60 degrees

• 75 degrees

• 65 degrees

What is the measure of an unknown angle in a circle if one angle measures 155 degrees?

• 225 degrees

• 205 degrees

• 215 degrees

• 195 degrees

What is the total measure of angles in a full circle?

• 360 degrees

• 450 degrees

• 270 degrees

• 180 degrees