Degrees and turns · seed 1 · A4, ink-friendly. The answer key prints on its own page for grown-ups.

Degrees and turns

Mathematics · Geometry · ages 9-10
Name ______________________   Date ____________

  1. Leo turns 180 degrees. Ava turns 90 degrees. Who makes the bigger turn?

    • Leo
    • Ava
    • They turn the same

  2. One degree is a fraction of a full turn.

    Circle one:   True   False

  3. A door swings open to a right angle. How many degrees has it turned from closed?

    • 90 degrees
    • 45 degrees
    • 180 degrees

  4. A round pizza is cut from the center into 360 equal-angle slices. One slice is what fraction of the full turn around the center?

    • 1/360 of the full turn
    • 1/90 of the full turn
    • 1/4 of the full turn

  5. A fan blade turns clockwise through three quarter turns. How many degrees does it turn?

    Answer: ______________

  6. A triangle has one square corner and two sharp corners. What is the square corner called?

    • an acute angle
    • an obtuse angle
    • a right angle

  7. An angle measures 180 degrees. Which turn is it?

    • full turn
    • quarter turn
    • half turn

  8. An angle measures 40 degrees. It is greater than 0 and smaller than a right angle. What is this kind of angle called?

    • acute
    • obtuse
    • right

  9. How many quarter turns fit inside a half turn?

    • 2
    • 3
    • 4

  10. How many one-degree slices fit inside a quarter turn?

    Answer: ______________

LightMySky · lightmysky.comW1-mt_qUGMyMYn9m-s1

Answer key

For grown-ups. Fold this page away before handing over the rest.

Degrees and turns W1-mt_qUGMyMYn9m-s1

  1. Leo · 180 degrees is more than 90 degrees, so Leo turns more.
  2. True · One degree is 1/360 of a full turn, a very small slice.
  3. 90 degrees · A right angle is a quarter turn, which is 90 degrees.
  4. 1/360 of the full turn · The pizza is cut from the center into 360 equal-angle slices. One slice is one of those 360, so it is 1/360 of the full turn, just like one degree.
  5. 270 · Three quarter turns is 90 + 90 + 90 = 270 degrees.
  6. a right angle · A square corner is a right angle, a quarter turn.
  7. half turn · 180 is half of 360, so 180 degrees is a half turn.
  8. acute · An acute angle has a positive opening greater than 0 and smaller than 90 degrees. 40 degrees fits that.
  9. 2 · A quarter turn is 90 degrees and a half turn is 180, and 90 plus 90 is 180.
  10. 90 · A quarter turn is 90 degrees, so 90 one-degree slices fit inside it.
Worksheet · LightMySky