Measuring Angles Using Fractions of a Circle

This video tutorial teaches how to measure angles using fractions of a circle. It begins with an introduction to angles and right angles, providing real-world examples. The lesson then uses a sprinkler to demonstrate how angles can be measured by dividing a circle into fractions. The tutorial concludes with methods for estimating angles using visual cues and circle fractions.

What is another name for a 90-degree angle?

• Acute angle

• Square angle

• Obtuse angle

• Reflex angle

How much of a circle does a right angle cover?

• 1/6

• 1/3

• 1/2

• 1/4

If a sprinkler waters 1/2 of a circle, what angle is formed?

• 270 degrees

• 360 degrees

• 180 degrees

• 90 degrees

What fraction of a circle is equivalent to 1 degree?

• 1/90

• 1/180

• 1/360

• 1/270

If a sprinkler turns 29 times out of 360, how many degrees has it turned?

• 360 degrees

• 180 degrees

• 90 degrees

• 29 degrees

What is the estimated angle if it is more than 180 degrees but less than 270 degrees?

• 270 degrees

• 240 degrees

• 225 degrees

• 135 degrees

Which tool is used for measuring angles precisely?

• Ruler

• Compass

• Set square

• Protractor