Geometry Crossword Puzzle

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Across
  1. 3. Quantity of three dimensional object. The amount of space in a 3D object.
  2. 4. A true statement that can be proven. A statement that has been proven on the basis of a previously established statement.
  3. 5. A figure with four sides. Consists of rectangles, parallelogram, square, rhombus, trapezoid, kite, and irregulars.
  4. 6. A line that cuts a line segment into two equal parts at 90°. A segment bisector that makes both sides 90°.
  5. 11. An object made by two rays that share an endpoint. A shape, formed by two lines or rays diverging from a common point.
  6. 12. The moving of shapes or lines. Can be done by translation, reflection, rotation, and dilation.
  7. 13. An angle that is 90°. An angle that makes a half a square.
  8. 14. A polygon with three edges and three vertices. A 2D shape with three sides that all come together.
  9. 16. Lines or points on the same plane. Any two or more items that are on the same plane.
  10. 17. A measure of all the faces on an object. The total area on the outside of a 3D object.
  11. 18. Lines that are at right angles to each other. Lines that meet each other and form 90° angles.
Down
  1. 1. A line that splits an angle into two equal parts. A line passing through the vertex of the angle that cuts it into two equal smaller angles.
  2. 2. A statement that is assumed true without proof. A true statement that needs no proof.
  3. 6. The relation among three sides on a right triangle. The formula is a2+b2=c2.
  4. 7. Lines on a plane that do not meet. Two lines that move in the same directions that will remain a certain distance from each other forever.
  5. 8. An example used to disprove a statement. Used to show the statement is false.
  6. 9. Two figures that have the same shape and size. Two shapes or measures that are the exact same.
  7. 10. A conditional statement that has negated the hypothesis and the conclusion. A statement that switches the hypothesis and conclusion, then adds not to each side.
  8. 15. A flat two dimensional surface. An infinite area that can have objects on it or through it.
  9. 18. The original figure before a transformation. A line, shape, or object before it was moved.