(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.