
Across 2. distance around a polygon 3. lines in the same place that never intersects 6. part of a line that has one endpoint and extends in one direction without end 7. Chinese puzzle made by cutting a square of thin material into seven pieces which can be recombined into many different figures 10. quadrilateral with opposite sides parallel and each pair of opposite sides and angles are congruent 12. correspondence in size, shape, and relative position of parts on opposite sides of a dividing line 14. polygon with four sides and four angles whose sum is 360 degrees 17. angle that measures 90 degrees 22. two angles whose measures have a sum of 180 degrees 23. a distance from side to side 25. equal 27. triangle with two congruent sides 28. transformation obtained by rotating a figure a given turn angle about a point 29. two rays with a common endpoint called the vertex Down 1. four equal sides and four right angles 2. solve with difficulty or ingenuity 4. quality or state of being similar 5. polygon having three sides 8. point where two mor more rays meet 9. parallelogram with four right angles 10. exact location in space 11. angle with a measure less than 90 degrees 12. give a particular form or shape to 13. flat surface extending in all directions 15. two angles whose measures have a sum of 90 degrees 16. angle that measures more than 90 degrees but less than 180 degrees 18. lines that cross at one point 19. a unit for measuring angles 20. longer or longest dimentsion of an object 21. number of square units needed to cover a given space 24. closed plane figure made up of line segments 26. branch of mathematics that deals with the measurement, properties, and relationships of points, lines, angles, surfaces and solids
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