2. The distance from side to side.
width
vertex
perimeter

3. A Chinese puzzle made by cutting a square of thin material into material into a number of pieces which can be recombined into many different figures.
parallelogram
symmetry
tangram

4. A polygon having three sides.
vertex
triangle
rectangle

5. A point where two or more rays meet, where sides of a polygon meet, or where edges of a polyhedron meet.
point
ray
vertex

6. Correspondence in size, shape, and relative position of parts on opposite sides of a dividing line or median plane or about a center of axis.
quadrilateral
similarity
symmetry

7. Two angles whose measures have a sum of 180 degrees.
supplementary angles
acute angles
right angles

8. An object having four equal sides and four right angles.
square
rectangle
parallelogram

9. The quality or state of being similiar.
geometry
vertex
similarity

10. To give a particular form or shape to.
plane
shapes
ray

11. A transformation obtained by rotating a figure a given turn angle about a point.
complementary angle
right angle
rotation

12. An angle that measures 90 degrees.
obtuse angle
right angle
supplementary angle

13. A parallelogram with four right angles.
perimeter
plane
rectangle

14. A part of a line that has one endpoint and extends in one direction without end.
ray
point
vertex

15. A polygon with four sides and four angles whose sum is 360 degrees.
quadrilateral
parallelogram
geometry

16. To solve with difficulty or ingenuity.
quiz
test
puzzle

17. A closed plane figure made up of line segments.
plane
square
polygon

18. An exact location in space.
place
ray
point

19. A flat surface extending in all directions.
geometry
square
plane

20. The distance around a polygon.
perimeter
rotation
area

21. A quadrilateral with opposite sides parallel. Each pair of opposite sides and angles are congruent.
parallel lines
parallelogram
polygon

22. Lines in the same plane that never intersect.
intersecting lines
parallel lines
plane

23. An angle that measures more than 90 degrees but less than 180 degrees.
obtuse angle
right angle
complementary angle

24. The longer or longest dimension of an object.
width
height
length

25. Lines that cross at one point.
intersecting lines
parallel lines
perimeter

26. A branch of mathematics that deals with the measurement, properties, and relationship of point, lines, angles.
geometry
algebra
symmetry

27. A unit for measuring angles.
rotation
tangram
degree

28. Equal.
joint
congruent
obtuse

29. Two angles whose measures have a sum of 90 degrees.
right angle
obtuse angle
complementary angle

30. The number of square units needed cover a given space.
perimeter
area
width

31. Two rays with a common endpoint called a vertex.
angle
complementary angle
supplementary angles

32. An angle with a measure less than 90 degrees.
supplementary angle
acute angle
complementary angle

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