Section B Section B Checkpoint

Problem 1

What is the measurement of each angle?

a.
protractor measuring an angle. Left side at 1 hundred 43 or 37 degrees. Right side at 1 hundred 80 or 0 degrees.

b.
protractor measuring an angle. Left side at 30 or 1 hundred 50 degrees. Right side at 1 hundred 60 or 20 degrees.

Show Solution
Solution
  1. 37∘37^\circ, because 180−143=37180 - 143 = 37.
  2. 130∘130 ^\circ, because 160−30=130160 - 30 = 130.
Show Sample Response
Sample Response
  1. 37∘37^\circ, because 180−143=37180 - 143 = 37.
  2. 130∘130 ^\circ, because 160−30=130160 - 30 = 130.

Problem 2

Use a protractor to draw a 135-degree angle.
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Solution
Sample response:

angle

Show Sample Response
Sample Response
Sample response:

angle