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Angles & triangles

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  • Which triangle is this?
    right triangle
  • How many sides does a triangle have?
    3
  • An angle that is exactly 180 degrees...
    straight
  • Which triangle is this?
    acute triangle
  • Which angle is this?
    acute angle
  • A angle that is exactly 90 degrees...
    right angle
  • A straight angle is also called...
    a line
  • Which angle is this?
    straight
  • A triangle with 1 right angle is called...
    a right triangle
  • What forms an angle?
    2 rays
  • A triangle with 1 obtuse angle is called...
    obtuse triangle
  • Which angle is this?
    obtuse angle
  • Which triangle is this?
    right triangle
  • Which angle is this?
    acute
  • Which angle is this?
    right
  • Which triangle is this?
    acute triangle
  • A triangle with 3 acute angles is called...
    acute triangle
  • Which triangle is this?
    obtuse triangle
  • An angle that is smaller than 90 degrees
    acute
  • An angle that is greater than 90 degrees
    obtuse
  • Which angle is this?
    obtuse
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