Geometry Crossword Puzzle

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Across
  1. 2. The same shape and size. When angles are the same size and lines are the same length.
  2. 4. A logical argument in which each statement you make is supported by a statement that is accepted as true. Given statements that prove a mathematical concept is true.
  3. 8. Number of cubic units contained in a solid. The amount of space in a certain 3-Dimensional object.
  4. 11. Mathematical operation that is opposite in effect of another operation. "If a polygon does not have 3 sides, then it is not a triangle."
  5. 13. The quantitative relationship between two amounts showing the number of times one value contains or is contained within the other. A comparative relationship between two or more numbers that indicates their sizes in relation to each other.
  6. 15. The square of the hypotenuse of a right triangle is equal to the sum of the square of the other two sides. The square of the longest side of a right triangle is equal to the sum of the square of the two smaller sides.
  7. 16. Chord that passes through the center of the circle. The radius doubled.
  8. 19. A statement that can be proven true by definitions and postulates. A declaration that can be demonstrated by accepted mathematical operations and arguments.
  9. 20. A statement that describes a fundamental relationship between basic terms of geometry. An axiom that is known to be true without proof.
Down
  1. 1. The perimeter of a circle.The arc length around a full circle.
  2. 2. segment that connects two points on a circle. A straight line segment whose endpoints both lie on a circular arc.
  3. 3. A statement that is formed by switching the hypothesis and the conclusion. "If two lines intersect, then they are perpendicular." "If two lines are perpendicular, then they intersect."
  4. 5. The number of square units to cover any surface. The amount of space occupied within the perimeter by a 2-Dimensional shape.
  5. 6. The distance around a 2-Dimensional shape. A closed path that encompasses and surrounds any flat shape.
  6. 7. the exact position and location on a plane surface. Has no length,width, or depth, represents a place using a dot.
  7. 9. a line that intersects a circle at two points. Every one of these lines defines a unique chord.
  8. 10. A straight one-dimensional figure that has infinite length but does not have a width or height. It is named by any two points to indicate a continuous extent of length.
  9. 12. Segment whose endpoints are the center of the circle and any point on the circle. Half of the diameter.
  10. 14. Equation that states two ratios are equal. Relationships between two variables where their ratios are equivalent.
  11. 17. A part of the line that has a fixed starting point, but does not have an end point. Also called the half-infinite line because one point is plotted, and the other point goes on infinitely.
  12. 18. branch of mathematics that deals with the measurement, properties, and relationships of points, lines,angles, surfaces,and solids. The studies of properties of given elements that remain invariant under specified transformations