Geometry

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Across
  1. 3. A flat or plane, two-dimensional closed shape bounded with straight sides.
  2. 6. Angle measuring less than 90°
  3. 7. The space enclosed by the boundary of a plane figure
  4. 8. A polygon having four sides, four angles, and four vertices.
  5. 10. closed, 2-dimensional shape with 3 sides, 3 angles, and 3 vertices.
Down
  1. 1. It has no endpoints and extends endlessly in both directions.
  2. 2. the space occupied within the boundaries of an object in three-dimensional space.
  3. 4. A point on a polygon where the sides or edges of the object meet or where two rays or line segments meet
  4. 5. lines two lines in the same plane that are at equal distance from each other and never meet
  5. 9. Round-shaped figure that has no corners or edges.