Geometry Crossword

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Across
  1. 3. This is a 3-D figure with one circle base. It is half of a sphere.
  2. 6. A line that intersects 2 or more parallel lines. It creates alternate exterior and interior angles.
  3. 7. This is a ratio of lengths of 2 corresponding sides of 2 similar polygons. The ratio can even be a fraction.
  4. 8. The longest side of a right triangle. Located on the opposite side of the right angle.
  5. 9. Angles that lie on the outside of the lines. It will have an adjacent interior angle.
  6. 10. a + b = c . Contains 2 legs and a hypotenuse.
  7. 14. This is a 3-D figure with 2 circular bases. The bases are parallel and are connected by a curved surface.
  8. 15. Polygons that have the same shape. They don't have to have the same size.
  9. 18. This is a 3-D figure with sides that are polygons. For example, a triangular prism.
  10. 19. Intersecting lines that make right angles. Their symbol is .
  11. 20. All angles in a given polygon are equal or congruent. If a polygon is this and equilateral, it is a regular polygon.
Down
  1. 1. These are objects made up of more than one solid. For example, a mailbox would be made of a rectangular prism and half of a cylinder.
  2. 2. This is a 3-D figure with all points the same distance from the center. This figure has a diameter, a radius, and an area.
  3. 4. Parts of congruent figures that match. They are in the same place of each figure.
  4. 5. Angles on the opposite sides of the transversal and inside the parallel lines. They are congruent angles.
  5. 11. A simple closed figure with 3 or more sides. A circle is not one of these.
  6. 12. This is the space occupied by a solid. It is measured in cubic units.
  7. 13. Two sides of the right triangle that make the right angle. These are the 2 shortest sides of the triangle.
  8. 16. These are lines that do not intersect. Their symbol is ll.
  9. 17. This is a 3-D figure with one circle base. The base is connected by a curved surface to a single vertex.