Geometric terms

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Across
  1. 1. lines do not intersect.
  2. 4. is a polygon with 5 sides and 5 angles.
  3. 5. is an angle less than 90 degrees but greater than 0 degrees.
  4. 6. angle is 90°.
  5. 7. segment is a line having two end points.
Down
  1. 2. of a triangle is a line segment that connects a vertex to the opposite line of the triangle, and is perpendicular to that line.
  2. 3. is a triangle with all sides equal and all angles equal.
  3. 4. is an angle whose measure is more than 90° and less than 180°.
  4. 6. is a line having only one end point.
  5. 8. is a triangle which has two sides equal.