Triangles and its properties (with lines and angles)

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Across
  1. 3. line that makes an angle of 90 degrees with the side of a triangle connecting it to the opposite vertex.
  2. 5. line that connects the middle of a side and the opposite vertex in a triangle.
  3. 6. ___ angles have the sum of 90 degrees.
  4. 8. a type of triangle which has 2 equal angles.
  5. 10. the triangle which the Pythagoras theorem is applied for.
Down
  1. 1. a squared + b squared = c squared.
  2. 2. ___ angles are related to each other.
  3. 4. ___ lines never meet.
  4. 7. a ___ degree angle is present in an equilateral triangle.
  5. 9. ___ angles have the sum of 180 degrees.