Measuring Angles with a Protractor

What tool is used to measure angles?

• Compass

• Set square

• Ruler

• Protractor

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

What is the value of a right angle?

• 180 degrees

• 90 degrees

• 45 degrees

• 60 degrees

Tags

TEKS.MATH.4.7D

Which of the following is not a step in measuring an angle with a protractor?

• Aligning the protractor's center with the vertex

• Ensuring the bottom ray aligns with the protractor's baseline

• Choosing the correct scale based on the angle type

• Measuring the angle's height

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

How can you determine an angle is acute?

• It is more than 180 degrees

• It is less than 90 degrees

• It is more than 90 degrees

• It is exactly 180 degrees

Tags

TEKS.MATH.4.7D

What is the value of the acute angle measured in the tutorial?

• 45 degrees

• 30 degrees

• 60 degrees

• 75 degrees

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

What method is used to measure an obtuse angle when the ray is too short?

• Using a compass

• Guessing the angle

• Using a second protractor

• Extending the ray with a ruler

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

What is the value of the obtuse angle measured?

• 145 degrees

• 180 degrees

• 135 degrees

• 90 degrees

Tags

TEKS.MATH.4.7D

What indicates that an angle is obtuse when using a protractor?

• It measures less than 90 degrees

• It measures exactly 90 degrees

• It measures more than 90 but less than 180 degrees

• It measures more than 180 degrees

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

How do you measure a reflex angle using a protractor?

• Measure the external angle directly

• Estimate without measuring

• Measure the internal acute angle and subtract from 360 degrees

• Use two protractors

Tags

TEKS.MATH.4.7C

TEKS.MATH.4.7D

What is the measure of the reflex angle discussed?

• 90 degrees

• 360 degrees

• 60 degrees

• 300 degrees

Tags

TEKS.MATH.4.7B