Cross word puzzle

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Across
  1. 3. Two lines perpendicular to the same line are ___ to each other.
  2. 4. Of all the line segments that can be drawn to a given, from a point, not lying on it, the shortest line segment is ___.
  3. 6. If the altitude from one vertex of a triangle bisects the opposite side, then the triangle is ___.
  4. 8. Diagonals necessarily bisects opposite angles in a ___.
  5. 10. The figure formed by joining the mid-points of the adjacent sides of a parallelogram is a ___.
Down
  1. 1. Increase in the area of the triangle is 300% if every side of a triangle is ___.
  2. 2. If two parallel lines are intersected by a tranversal, then interior angles on the same side of the transversal are ____.
  3. 5. Two distant points always determine a ___.
  4. 7. If one angle of a linear pair is acute, then the other angle will be ___.
  5. 9. If one angle of a triangle is equal to the sum of other two angles, then the triangle is a ___ triqngle.