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6-1 through 6-3 Vocabulary

Name: ___________________________________
Date: ____________________________________
Block: ____________________________________
Across
(p. 403) To name a parallelogram, use the ______ ▱.
(p. 417) Rene _________ was a French mathematician who was the first to use a coordinate grid.
(p. 416) If the ________ of each diagonal is the same point, then the diagonals bisect each other.
(p. 405) If a quadrilateral is a parallelogram, then each diagonal _________ the parallelogram into two congruent triangles.
(p. 404) In a(n) _____, you must include a drawing so that you can refer to segments and angles specifically.
(p. 393) The sum of the ________ angle measures of an n-sided convex polygon is (n - 2) · 180.
(p. 406) You can use Theorem 6.7 to determine the ___________s of the intersection of the diagonals of a parallelogram on a __________ plane given the __________s of the vertices.
(p. 403) If a parallelogram has one ______ angle, then it has four ______ angles.
(p. 397) To find the measure of each exterior angle of a regular polygon, you can find the measure of each interior angle and subtract this measure from 180, since an exterior angle and its corresponding interior angle are supplementary.
(p. 396) The sum of the exterior angle measures of a convex polygon, ___ angle at each vertex, is 360.
(p. 413) If both pairs of opposite angles of a(n) _____________ are congruent, then the _____________ is a parallelogram.
(p. 403) If a quadrilateral is a parallelogram, then its ________ sides are conguent.
(p. 396) ________ angle - an angle formed by one side of a polygon and the extension of another side
(p. 416) coordinate proof - a proof that uses figures in the coordinate _____ and algebra to prove geometric concepts
(p. 395) _______ polygon - a convex polygon in which all of the sides are congruent and all of the angles are congruent
(p. 393) Notice that the diagonals from vertex P separate the polygon into three ________.
(p. 394) Remember, a(n) _______ with n-sides is an n-gon, but several _______s have special names.
(p. 403) If a quadrilateral is a parallelogram, then its opposite ______ are congruent.
(p. 415) You can also use the conditions of parallelograms along with _______ to find missing values that make a quadrilateral a parallelogram.
Down
(p. 413) If ____ pairs of opposite sides of a quadrilateral are congruent, then the quadrilateral is a parallelogram.
(p. 416) To show that a quadrilateral is a parallelogram, you can also use the Midpoint ________.
(p. 413) If the diagonals of a quadrilateral bisect each _____, then the quadrilateral is a parallelogram.
(p. 394) Recall from Lesson 1-6 that in an interior polygon, all of the interior angles are __________.
(p. 395) Given the interior angle measures of a regular polygon, you can also use the Polygon Interior Angles Sum Theorem to find a polygon's number of _____.
(p. 405) If a quadrilateral is a parallelogram, then its diagonals _____ each other.
(p. 393) A(n) ________ of a polygon is a segment that connects any two nonconsecutive vertices.
(p. 403) If a quadrilateral is a parallelogram, then its ____________ angles are supplementary.
(p. 393) Since the ___ of the angle measures of a triangle is 180, we can make a table and look for a pattern to find the ___ of the angle measures for any convex polygon.
(p. 414) You can use the conditions of parallelograms to prove relationships in ____-_____ situations (write as one word).
(p. 394) You can use this fact and the Polygon Interior Angle Sum _______ to find the interior angle measure of any regular polygon.
(p. 416) The Distance, _____, and Midpoint Formulas were used to write coordinate proofs of theorems.
(p. 403) A(n) _____________ is a quadrilateral with both pairs of opposite sides parallel.
(p. 416) In Chapter 4, you learned that ________ coordinates can be assigned to the vertices of triangles.
(p.406) You can use the __________ of parallelograms and their diagonals to write proofs.
(p. 413) If a quadrilateral has each pair of opposite sides ________, it is a ________ogram by definition.
(p. 405) A parallelogram with two diagonals divides the figure into two _____ of congruent triangles.
(p.393) The sum of the angle measures of a polygon is the sum of the angle measures of the triangles formed by drawing all the possible diagonals from one ______.
(p. 413) If one pair of opposite sides of a quadrilateral is both parallel ___ congruent, then the quadrilateral is a parallelogram.