Measuring Angles with Protractors

What tool is essential for measuring angles in this lesson?

• Calculator

• Protractor

• Compass

• Ruler

Tags

CCSS.4.MD.C.6

What should you do first if an angle is too small to measure directly?

• Measure as is

• Extend the lines

• Use a larger protractor

• Guess the angle

Tags

CCSS.4.MD.C.6

What type of angle is less than 90 degrees?

• Straight

• Acute

• Right

• Obtuse

Tags

CCSS.4.G.A.1

Where should the hole of the protractor be placed when measuring an angle?

• Outside the angle

• On the vertex

• On the protractor's edge

• On any point

Tags

CCSS.4.MD.C.6

Which direction should you read the numbers on the protractor if the arrow points left?

• Outside numbers

• Top numbers

• Bottom numbers

• Any numbers

Tags

CCSS.4.MD.C.6

What is the correct angle measurement for the example given in the lesson?

• 72 degrees

• 58 degrees

• 121 degrees

• 45 degrees

Tags

CCSS.4.MD.C.6

What should you do after extending the lines of a small angle?

• Align the vertex

• Erase the extensions

• Measure immediately

• Check the protractor's zero line

Tags

CCSS.4.MD.C.6

What is the angle type that is greater than 90 degrees?

• Obtuse

• Right

• Acute

• Straight

Tags

CCSS.4.G.A.1

How close should your angle measurement be to the teacher's example?

• Exactly the same

• Within 5 degrees

• Within 10 degrees

• Any measurement

Tags

CCSS.4.MD.C.6

What is the final step in the angle measurement process described?

• Extend the lines again

• Write down the measurement

• Remove the protractor

• Check the angle type

Tags

CCSS.4.MD.C.6