Measuring Angles: Key Concepts and Techniques

The video tutorial covers the process of measuring angles using a protractor, identifying angle types, and verifying measurements. It demonstrates measuring specific angles like AGD, AGB, BGD, and DGE, using different methods such as hops and subtraction. The tutorial also explains solving angle problems without a protractor by using given information and combining angles to find a whole angle.

What is the first step in measuring angles?

• Use a protractor to measure immediately.

• Identify the type of angle.

• Write down the angle measurement.

• Check if the angle makes sense.

Tags

CCSS.4.MD.C.6

What is the characteristic of an obtuse angle?

• It is less than 90 degrees.

• It is exactly 90 degrees.

• It is more than 90 degrees.

• It is less than 180 degrees.

Tags

CCSS.4.G.A.1

What is the measure of angle AGD?

• 60 degrees

• 90 degrees

• 120 degrees

• 110 degrees

Tags

CCSS.7.G.B.5

How do you verify your angle measurement is correct?

• Using estimation to check if it makes sense.

• Asking someone else to measure it.

• Comparing it with a known angle.

• By measuring again with a different tool.

Tags

CCSS.4.MD.C.6

What is the measure of angle AGB?

• 50 degrees

• 110 degrees

• 90 degrees

• 60 degrees

Tags

CCSS.7.G.B.5

What should you do if an angle does not start at zero on a protractor?

• Guess the measurement.

• Use estimation and different strategies to measure.

• Only use subtraction to find the measure.

• Ignore the angle as it cannot be measured.

Tags

CCSS.4.MD.C.6

How can you measure an angle that's in the middle of a protractor?

• Angles in the middle cannot be measured.

• By estimating and then using hops or subtraction.

• By using only the right zero.

• By using only the left zero.

Tags

CCSS.4.MD.C.6

What is the measure of angle BGD?

• 50 degrees

• 60 degrees

• 40 degrees

• 70 degrees

Tags

CCSS.7.G.B.5

How do you find the measure of an unknown angle without a protractor?

• Using given angle measures and mathematical operations.

• Guessing based on the angle type.

• Estimating and not verifying.

• Measuring with a ruler.

Tags

CCSS.4.MD.C.7

What is the measure of angle MNO?

• 145 degrees

• 125 degrees

• 135 degrees

• 155 degrees

Tags

CCSS.7.G.B.5