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6-4 through 6-6 Vocabulary

Name: ___________________________________
Date: ____________________________________
Block: ____________________________________
Across
(p. 430) A(n) _______ is a parallelogram with all four sides congruent.
(p. 430) If a parallelogram is a rhombus, then each diagonal _______ a pair of opposite angles.
(p. 424) The ________ of Theorem 6.13 is also true.
(p. 423) Opposite ______ are congruent
(p. 423) The diagonals of a rectangle are congruent.
(p. 432) If ___ diagonal of a parallelogram bisects a pair of opposite angles, the the parallelogram is a rhombus. (Converse of Theorem 6.16)
(p. 434) When analyzing a figure using coordinate geometry, _____ the figure to help formulate a conjecture and also to help check the reasonableness of the answer you obtain algebraically.
(p. 441) Recall that the symbol ∦ means not ________ to.
(p. 441) The midsegment of a trapezoid is parallel to each base and its measure is one ____ the sum of the lengths of the bases.
(p. 424) If the diagonals of a(n) _____________ are congruent, then the _____________ is a rectangle.
(p. 431) A(n) ______ is a parallelogram with four congruent sides and four right angles.
(p. 441) The __________ of a trapezoid is the segment that connects the midpoints of the legs of the trapezoid.
(p. 432) If one ____ of consecutive sides of a parallelogram are congruent, the parallelogram is a rhombus.
(p. 423) ___________ angles are supplementary.
(p. 443) The congruent angles of a kite are included by the non-congruent ________ sides.
(p. 423) A(n) _________ is a parallelogram with four right angles.
(p. 423) Opposite _____ are parallel and congruent.
(p. 432) Theorems 6.17, 6.18, and 6.19 apply ____ if you already know that a quadrilateral is a parallelogram.
(p. 439) The nonparallel sides are called ____.
Down
(p. 442) A(n) ____ is a quadrilateral with exactly two pairs of consecutive congruent sides.
(p. 423) Diagonals ______ each other
(p. 432) If the diagonals of a parallelogram are perpendicular, then the parallelogram is a rhombus. (________ of Theorem 6.15)
(p. 424) You can use the properties of rectangles along with _______ to find missing values.
(p. 430) A rhombus has all the __________ of a parallelogram and the two additional characteristics described in the theorems below.
(p. 425) You can also use the properties of rectangles to prove that a quadrilateral positioned on a(n) __________ plane is a rectangle given the __________s of the vertices.
(p. 441) A midsegment of a trapezoid can also be called a(n) ______.
(p. 439) The base ______ are formed by the base and one of the legs.
(p. 430) If a parallelogram is a rhombus, then its diagonals are _____________.
(p. 432) ___ of the properties of parallelograms, rectangles, and rhombi apply to squares.
(p. 431) The plural form of rhombus is ______, pronounced ROM-bye.
(p. 431) A parallelogram that is ____ a rectangle and a rhombus is also a square.
(p. 439) A(n) ________ is a quadrilateral with exactly one pair of parallel sides.
(p. 424) If a parallelogram has one right angle, then it has ____ right angles.
(p. 439) If the legs of a trapezoid are congruent, then it is a(n) _________ trapezoid.
(p. 432) Since a rhombus has four congruent sides, one diagonal ________ the rhombus into two congruent isosceles triangles.
(p. 434) A square is a rhombus, but a rhombus is ___ necessarily a square.
(p. 423) All four angles are _____ angles
(p. 432) If a quadrilateral is both a rectangle and a rhombus, ____ it is a square.
(p. 439) The parallel sides are called ______.