how can we move the triangle so we get in the right space so we can get it right?

If you click and hold on the protractor, you can drag it wherever you want. You will need to drag the protractor so that the dot in the middle of the straight side is exactly over the "vertex" of the angle (this is the point where the two lines of the angle meet). Once you have the protractor in the right place, you can unclick. Then just click and drag the green arrow to rotate the protractor around. You will want to rotate the protractor until the part that says "0" lines up with one side of the angle. Now you can tell what the measure of the angle is by seeing what number the other side of the angle passes through on the protractor. Hope this helps!

What job we need to use this?

Engineer, Programmer, most if not all of the trades, and probably a few more.

I wasn't able to rotate my protractor. Please help.

Click the arrow points that are right next to the protractor. I hope this helped!

sometimes it is easy to guess the angle measure so why use protractors

sometimes we need to use protractors to find the exact answer of degrees.

Main content

Course: 4th grade > Unit 12

Lesson 2: Measuring angles

Measuring angles review

Google Classroom

Review measuring angles with a protractor, then try some practice problems.

Measuring angles

Angles are measured in degrees. We can use a protractor to measure how many degrees an angle is.

Example:

Measure the following angle in degrees:

First, we line up the dot on the center of the protractor with the vertex of the angle.

Next, we rotate the protractor so that the

0^{\circ}

mark lines up with one side of the angle.

Finally, we read the protractor to see where the other side lines up.

The angle is $70^{\circ}$ ‍.

Want to learn more about measuring angles? Check out this video.

Practice

Problem 1

Measure the angle in degrees.

^{\circ}

Want to try more problems like this? Check out this exercise.

Want to join the conversation?

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matayah
Posted 4 years ago. Direct link to matayah's post “how can we move the trian...”
how can we move the triangle so we get in the right space so we can get it right?
Button navigates to signup pageComment on matayah's post “how can we move the trian...”
(53 votes)
Answer
- Polina Vitić
  Posted 4 years ago. Direct link to Polina Vitić's post “If you click and hold on ...”
  If you click and hold on the protractor, you can drag it wherever you want. You will need to drag the protractor so that the dot in the middle of the straight side is exactly over the "vertex" of the angle (this is the point where the two lines of the angle meet).
  
  Once you have the protractor in the right place, you can unclick. Then just click and drag the green arrow to rotate the protractor around. You will want to rotate the protractor until the part that says "0" lines up with one side of the angle.
  
  Now you can tell what the measure of the angle is by seeing what number the other side of the angle passes through on the protractor.
  
  Hope this helps!
  Comment on Polina Vitić's post “If you click and hold on ...”
  (83 votes)
🌹Nicolle🥀
Posted 3 years ago. Direct link to 🌹Nicolle🥀's post “What job we need to use t...”
What job we need to use this?
Button navigates to signup pageComment on 🌹Nicolle🥀's post “What job we need to use t...”
(15 votes)
Answer
- Geminix
  Posted a year ago. Direct link to Geminix's post “Engineer, Programmer, mos...”
  Engineer, Programmer, most if not all of the trades, and probably a few more.
  Button navigates to signup page
  (7 votes)
Paola Carrillo
Posted a year ago. Direct link to Paola Carrillo's post “This is a little hard but...”
This is a little hard but I think I could do it by working the problem slowly and taking my time
Button navigates to signup pageButton navigates to signup page
(12 votes)
Answer
- Aarnav B
  Posted 3 months ago. Direct link to Aarnav B's post “keep going!”
  keep going!
  Button navigates to signup page
  (3 votes)
Aarush33
Posted 5 years ago. Direct link to Aarush33's post “sometimes it is easy to g...”
sometimes it is easy to guess the angle measure so why use protractors
Button navigates to signup pageComment on Aarush33's post “sometimes it is easy to g...”
(3 votes)
Answer
- Angel
  Posted a year ago. Direct link to Angel's post “sometimes we need to use ...”
  sometimes we need to use protractors to find the exact answer of degrees.
  Comment on Angel's post “sometimes we need to use ...”
  (14 votes)
jk parker
Posted 5 years ago. Direct link to jk parker's post “OMG I figured it out! lol...”
OMG I figured it out! lol Question, is it possible to kind of eye the measurement? Where you dont use any tools you just look at the angle?
Button navigates to signup pageComment on jk parker's post “OMG I figured it out! lol...”
(5 votes)
Answer
- calebec39
  Posted a year ago. Direct link to calebec39's post “Only if you look really c...”
  Only if you look really carefully
  Button navigates to signup page
  (1 vote)
SolairaO
Posted a year ago. Direct link to SolairaO's post “I would really like more ...”
I would really like more questions with protractors.
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(9 votes)
Answer
Kael Viehmann
Posted 3 years ago. Direct link to Kael Viehmann's post “The questions are very ea...”
The questions are very easy and simple. Could you do a version for older kids?
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(10 votes)
Answer
- Maddox stoneking
  Posted a year ago. Direct link to Maddox stoneking's post “no!no!NO!NO!”
  no!no!NO!NO!
  Comment on Maddox stoneking's post “no!no!NO!NO!”
  (0 votes)
hanswi2326
Posted 4 years ago. Direct link to hanswi2326's post “that was a lot easier aft...”
that was a lot easier after just looking at it
Button navigates to signup pageComment on hanswi2326's post “that was a lot easier aft...”
(10 votes)
Answer
- Essie Shii
  Posted 3 years ago. Direct link to Essie Shii's post “I know but when you do it...”
  I know but when you do it it is not easy
  Comment on Essie Shii's post “I know but when you do it...”
  (0 votes)
Emilia
Posted 3 years ago. Direct link to Emilia's post “why is it very hard to li...”
why is it very hard to line up the lines
Button navigates to signup pageButton navigates to signup page
(6 votes)
Answer
- braxton.tonblake
  Posted a year ago. Direct link to braxton.tonblake's post “Because your not using th...”
  Because your not using the protractor right!
  Comment on braxton.tonblake's post “Because your not using th...”
  (1 vote)
isaakr1002
Posted 4 years ago. Direct link to isaakr1002's post “I wasn't able to rotate m...”
I wasn't able to rotate my protractor. Please help.
Button navigates to signup pageButton navigates to signup page
(6 votes)
Answer
- Daniel
  Posted 4 years ago. Direct link to Daniel's post “Click the arrow points th...”
  Click the arrow points that are right next to the protractor. I hope this helped!
  Comment on Daniel's post “Click the arrow points th...”
  (4 votes)