Measuring Angles Accurately with a Protractor

The video tutorial, led by Mrs. McChristian and Mrs. Lita, teaches students how to measure angles using a protractor. It begins with an introduction to angles and the use of grid paper to identify a 90-degree angle. The tutorial then demonstrates measuring acute angles, followed by identifying and measuring obtuse angles. The instructors provide step-by-step guidance on aligning the protractor and reading measurements accurately. The lesson concludes with a final example, reinforcing the concepts of acute and obtuse angles and their measurements.

What type of angle is less than 90 degrees?

• Straight angle

• Acute angle

• Obtuse angle

• Right angle

Tags

CCSS.4.G.A.1

What is the estimated range of the first angle measured in the video?

• Between 40 and 50 degrees

• Between 30 and 40 degrees

• Between 20 and 30 degrees

• Between 10 and 20 degrees

Tags

CCSS.4.MD.C.6

How do you align a protractor to measure an angle?

• None of the above

• Align the vertex with 90 degrees

• Align the bottom line with 0 degrees

• Align the top line with 180 degrees

Tags

CCSS.4.MD.C.6

What is the exact measurement of the second angle discussed?

• 33 degrees

• 34 degrees

• 35 degrees

• 36 degrees

Tags

CCSS.4.MD.C.6

Which angle measurement is slightly less than 35 degrees?

• 30 degrees

• 36 degrees

• 32 degrees

• 34 degrees

Tags

CCSS.4.MD.C.6

What is the range of the obtuse angle measured?

• Between 100 and 110 degrees

• Between 110 and 120 degrees

• Between 90 and 100 degrees

• Between 80 and 90 degrees

Tags

CCSS.4.G.A.1

What is the correct measurement of the obtuse angle if it is slightly less than 95 degrees?

• 93 degrees

• 96 degrees

• 94 degrees

• 95 degrees

Tags

CCSS.4.MD.C.6

What type of angle is larger than a right angle but less than 180 degrees?

• Acute angle

• Right angle

• Obtuse angle

• Straight angle

Tags

CCSS.4.G.A.1

What is the measurement of the final angle discussed in the video?

• 112 degrees

• 116 degrees

• 110 degrees

• 114 degrees

Tags

CCSS.7.G.B.5

How should you position a protractor to start measuring an angle?

• Align the vertex with the center of the protractor

• Align the top line with the center

• None of the above

• Place the protractor randomly

Tags

CCSS.4.MD.C.6