Crossword Puzzle for Quadrilaterals
WORD LIST
BASEANGLES
BASES
COMPLEMENTARY
CONGRUENT
CONTRADICTION
DECAGON
DIAGONALS
DODECAGON
EXTERIOR ANGLE
HEIGHT
HEXAGON
HYPOTENUSE
ISOSCELES TRAPEZOID
ISOSCELESTRIANGLES
KITE
LEGS
MEDIAN OF A TRIANGLE
MIDSEGMENT OF A TRAPEZOID
MIDSEGMENT OF A TRIANGLE
NEGATION
NONAGON
OCTAGON
OPPOSITE ANGLES
PARALLEL
PARALLELOGRAM
PENTAGON
PERPENDICULAR BISECTOR
POLYGON
QUADRILATERAL
QUINDECAGON
RECTANGLE
RHOMBUS
RIGHTANGLE
RIGHT TRIANGLES
SUPPLEMENTARY
TRAPEZOID
Across
2. / If a point is equidistant from the endpoints of a segment, then it lies on the ____ of the segment. (two words)5. / The MOST GENERAL parallelogram with congruent diagonals is a(n) ____.
6. / Each diagonal of a rhombus bisects a pair of _____. (two words)
9. / The ____ of a rhombus are always perpendicular.
10. / A quadrilateral with exactly one pair of parallel sides, one pair of congruent sides, two pair of congruent base angles, and congruent diagonals is a(n) ____. (two words)
12. / Any many-angled figure with all line segments for sides is a(n) ____.
13. / The ____ measures half of the base parallel to it. (four words)
14. / A regular polygon each of whose exterior angles measures 72° is a(n) _____.
15. / A regular polygon each of whose interior angles measures 135° is a(n) ____.
16. / An indirect proof proceeds until we reach a(n) ____ of a known fact such as a given, a definition, a theorem, a postulate, or a property of algebra.
17. / The opposite angles of an isosceles trapezoid are ____.
18. / A regular ____ has fifteen sides.
20. / The perpendicular distance between the bases of a trapezoid or between the vertex angle and base of a triangle (i.e. the length of the altitude) is called the ____.
21. / A line segment connecting the midpoints of the legs of a quadrilateral with only one pair of parallel sides is called the ___ . (four words)
24. / In a parallelogram, both pair of opposite sides and opposite angles are ____.
28. / Any polygon whose interior angles sum to 360° is a(n) _____.
29. / We can know that a parallelogram is a rectangle if it has even one ____ . (two words)
30. / An isosceles trapezoid has two pair of congruent ___ . (two words)
31. / The parallel sides of a trapezoid are called its _____.
34. / The diagonals of a rhombus form four congruent ____. (two words)
35. / The diagonals of a rectangle form two pair of congruent _____. (two words)
Down
1. / The line segment that connects a vertex to the midpoint of the opposite side is called a(n) _____. (four words)3. / If a quadrilateral has one pair of sides known to be both parallel and congruent, then that quadrilateral MUST be ____.
4. / A regular polygon whose interior angles sum to 1260° is a(n) ____.
7. / The ____ of a triangle must be greater than either of its remote interior angles. (two words)
8. / We begin an indirect proof by temporarily assuming the ____ of the conclusion we desire to prove.
11. / The acute angles of a right triangle are always _____.
19. / A regular convex polygon with twelve angles is a(n) ____.
20. / The midpoint of the ____ of a right triangle is always equidistant from the three vertices.
22. / Both the midsegment of a triangle and the midsegment of a trapezoid are ____ to the base.
23. / A regular polygon whose sides are equal in length to the radius of the circle that circumscribes it is a(n) ____.
25. / The MOST GENERAL quadrilateral with exactly one pair of parallel sides and one pair of non-parallel sides is a(n) _____.
26. / A regular convex polygon each of whose exterior angles measures 36° is a(n) ____.
27. / The MOST GENERAL parallelogram with four congruent sides is a(n) ______.
32. / A quadrilateral with perpendicular diagonals, one pair of congruent opposite angles, a diagonal that bisects a pair of opposite angles, one diagonal that bisects the other diagonal, and two pair of congruent consecutive sides, yet is still NOT a parallelogram is a(n) _____.
33. / The sides of a trapezoid that are not parallel are called its _____.