Geometry Vocabulary Review

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Across
  1. 3. The longest side of a right triangle.
  2. 9. Two angles that add up to 90 degrees.
  3. 12. A straight line at an angle of 90° to a given line, plane, or surface.
  4. 13. A side of a polygon or a face of a polyhedron, often considered the bottom or a reference side for calculating area or volume, especially when paired with a corresponding height.
  5. 14. The measure of a 2D space enclosed within a closed shape or figure.
  6. 16. A three-sided polygon that has three angles, vertices, and sides.
  7. 17. The sum of all the sides of a polygon.
  8. 18. The distance around a circle.
  9. 19. The distance measured along the slanted side of a 3D shape (like a cone or pyramid) from the base to the vertex.
  10. 20. The distance from the center of a circle to any point on its edge.
  11. 23. A polygon with four sides.
  12. 25. A solid shape with a circular base that tapers to a point.
  13. 26. A perfectly round, 3D shape where every point on its surface is the same distance from the center.
Down
  1. 1. The type of triangle with one angle measuring 90 degrees.
  2. 2. A three-dimensional object with two parallel circular bases.
  3. 4. The sum of all the faces of a 3D shape.
  4. 5. The vertical distance measured from the base to the top or highest point of a shape or object.
  5. 6. A measure of rotation between two intersecting lines.
  6. 7. A figure made up of multiple basic geometric shapes.
  7. 8. Two angles that add up to 180 degrees.
  8. 10. Two lines that never intersect and have the same slope but different y-intercepts are ______.
  9. 11. The space occupied by a 3D object.
  10. 15. The number approximately equal to 3.14159, used in calculations involving circles.
  11. 21. A straight line passing through the center of a circle, touching both sides.
  12. 22. A line that touches a circle at exactly one point.
  13. 24. The two shortest sides of a right triangle are called the _____.