Geometry vocabulary

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Across
  1. 1. a line enclosing a plane area
  2. 3. angle the 90 degree angle between two perpendicular lines
  3. 6. a quadrilateral with one pair of parallel sides
  4. 7. ratio of the adjacent side to the hypotenuse of a right-angled triangle
  5. 8. an angle between 90 and 180 degrees
  6. 9. a parallelogram with four equal sides
  7. 11. a solid figure bounded by plane polygons or faces
Down
  1. 1. Lines are formed when two lines meet each other at the right angle or 90 degrees.
  2. 2. triangle a triangle with two equal sides
  3. 3. a straight line from the center to the perimeter of a circle
  4. 4. is defined as a line intersecting two or more given lines in a plane at different points.
  5. 5. is a part of the line segment that has only one endpoint.
  6. 10. a point equidistant from the ends of a line or the extremities of a figure