cross word on triangles

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Across
  1. 2. Angles on same side of transversal.
  2. 5. The perpendicular drawn from the vertex of the triangle to the opposite side
  3. 6. Angles formed on opposite sides of transversal towards the interior.
  4. 8. lying or moving in the same direction but always the same distance apart.
  5. 9. famous Greek mathematician who gave BPT.
  6. 10. figures that have same shape but not size.
Down
  1. 1. figures that have same shape and size.
  2. 3. closed figure with 4 sides.
  3. 4. Used to compare two numbers.
  4. 7. Quadrilateral with one pair of opposite sides are parallel.