Triangles: Relationship Between Sides & Angles

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Across
  1. 3. a triangle with three equal side lengths and three equal angle measurements.
  2. 5. a side of a triangle that is perpendicular to its height.
  3. 9. an angle that measures exactly 90 degrees.
  4. 11. a triangle with two equal sides and two equal angles.
  5. 14. the sum of the lengths of all three sides of the triangle.
  6. 15. the angle outside a triangle that is formed when a side is extended.
  7. 16. the point where two sides of a triangle meet.
  8. 17. an angle than measures greater than 90 degrees.
Down
  1. 1. the halfway point on a triangle's side.
  2. 2. a triangle with three different side lengths and three different angle measurements.
  3. 4. a shape with three straight sides.
  4. 6. a line that extends from a vertex to the midpoint of the side across from that vertex.
  5. 7. an angle that measures less than 90 degrees.
  6. 8. a line that cuts an angle in two equal angles.
  7. 10. the space formed inside the triangle where two sides meet.
  8. 12. any one of the three lines that form a triangle.
  9. 13. the entire space covered by the triangle.