Unit One Shapes Vocabulary

Review definitions and vocabulary of shapes

Word Bank
acute, congruent, decagon, heptagon, hexagon, kite, nonagon, obtuse, octagon, parallel, parallelogram, pentagon, quadrilateral, rectangle, reflection, rhombus, right angle, rotation, sides, square, straight, symmetry, trapezoid, triangle

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Across

1. line segments that are part of a shape.

4. angle measuring less than 90 degrees.

6. shape with six sides.

7. property where a shape can be transformed onto itself.

11. shape with five sides. headquarters of the US Dept of Defense.

14. shape with four sides.

16. having exactly the same shape and size.

18. quadrilateral with four right angles and two pairs of congruent sides.

21. shape with eight sides. shape of a stop sign.

22. quadrilateral with one pair of parallel sides.

23. shape with nine sides.

Down

1. quadrilateral with four right angles and four congruent sides.

2. shape with ten sides.

3. angle measuring more than 90 degrees and less than 180.

5. shape with three sides.

8. angle measuring 90 degrees.

9. lines that never intersect; lines with the same slope.

10. rigid transformation through a mirror line.

12. quadrilateral with two pairs of parallel sides.

13. quadrilateral with two pairs of congruent adjacent sides.

15. line with one slope.

17. shape with seven sides.

19. rigid transformation that changes orientation / direction.

20. quadrilateral with four congruent sides.

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