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Angle and Triangle Vocabulary

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  • These can make a right angle when put together.
    complementary angles
  • This angle equals exactly 90 degrees
    right angle
  • Name all three relationships between angle 1 & angle 2
    adjacent, supplementary, linear
  • This angle measures more than 90 degrees and less than 180 degrees.
    obtuse angle
  • This type of angle measures less than 90 degrees.
    acute angle
  • These angles are always next to each other.
    adjacent angles
  • Every triangle will have at least one of these types of angles.
    acute angle
  • These angles add up to equal 180 degrees.
    supplementary angles
  • Name two relationships between the angles pictured
    adjacent and complementary
  • These angles are always equal to each other.
    vertical angles
  • This angle makes a corner.
    right angle
  • What type of triangle is this?
    acute scalene
  • These angles always share a vertex, but are not next to each other.
    vertical angles
  • Name this triangle
    right isosceles
  • A 42 degree angle is an example of this type of angle.
    acute angle
  • These angles add up to equal 90 degrees.
    complementary angles
  • Name this triangle
    acute equilateral
  • These angles are congruent.
    vertical angles