Geometry: Properties of Quadrilaterals Understand the properties of Quadrilaterals, including opposite sides, opposite angles, and diagonals and apply these relationships to solve problems. Geometry for grade10, based on Common Core standard G-CO.11, and on TEKS standard G-6E 10 Questions by Math_by_Kahoot 12/08/2017 answers Play N/A plays Which statement is true about all parallelograms? Consecutive angles are congruent. All four sides are congruent. Pairs of opposite sides are congruent. Diagonals are perpendicular. A parallelogram is shown. What is the length of side AB? 6 9 18 30 The ratio of two angle measures in a parallelogram is 2:3. The measure of the smaller angle is 108° 72° 60° 36° … and 7 more awesome questions! Check them out by clicking “Play”.