Geometry Crossword Puzzle

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Across
  1. 2. The original figure before a transformation. A line, shape, or object before it was moved.
  2. 3. Lines that are at right angles to each other. Lines that meet each other and form 90° angles.
  3. 7. A statement that is assumed true without proof. A true statement that needs no proof.
  4. 9. 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.
  5. 10. A flat two dimensional surface. An infinite area that can have objects on it or through it.
  6. 13. The moving of shapes or lines. Can be done by translation, reflection, rotation, and dilation.
  7. 15. The relation among three sides on a right triangle. The formula is a2+b2=c2.
  8. 18. An angle that is 90°. An angle that makes a half a square.
  9. 19. A true statement that can be proven. A statement that has been proven on the basis of a previously established statement.
Down
  1. 1. 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.
  2. 2. A line that cuts a line segment into two equal parts at 90°. A segment bisector that makes both sides 90°.
  3. 4. A measure of all the faces on an object. The total area on the outside of a 3D object.
  4. 5. Quantity of three dimensional object. The amount of space in a 3D object.
  5. 6. An example used to disprove a statement. Used to show the statement is false.
  6. 8. Two figures that have the same shape and size. Two shapes or measures that are the exact same.
  7. 11. A figure with four sides. Consists of rectangles, parallelogram, square, rhombus, trapezoid, kite, and irregulars.
  8. 12. 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.
  9. 14. Lines or points on the same plane. Any two or more items that are on the same plane.
  10. 16. A polygon with three edges and three vertices. A 2D shape with three sides that all come together.
  11. 17. An object made by two rays that share an endpoint. A shape, formed by two lines or rays diverging from a common point.