Geometry: Theorems Involving Lines and Angles Apply theorems about angles formed by intersecting lines and line segments and apply these relationships to solve problems. Geometry for grade10, based on Common Core standard G-CO.9 and on TEKS standard G-6A 11 Questions by Math_by_Kahoot 12/08/2017 answers Play N/A plays Parallel lines are cut by a transversal. Which type of angles formed are not always congruent? Corresponding angles Vertical angles Supplementary angles Alternate exterior angles Which statement can be used to prove that AB and CD are parallel? ∠6 ≃ ∠8 ∠3 ≃ ∠4 ∠3 and ∠7 are supplementary ∠1 and ∠6 are supplementary Two supplementary angles are in the ratio of 3:7. What is the measure of the smaller angle? 18° 30° 54° 126° … and 8 more awesome questions! Check them out by clicking “Play”.