Triangles

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Across
  1. 3. measure is 90 dregrees
  2. 5. one angle is an obtuse angle
  3. 8. all three angles are acute angles
  4. 9. less than 90 degrees
  5. 10. two sides are the same length
  6. 11. greater than 90 degrees
Down
  1. 1. one angle is a right angle
  2. 2. the sum of the measures of the angles in a triangle
  3. 4. no sides are the same length
  4. 6. a polygon with three sides
  5. 7. all sides are the same length