Geometry: Angle Relationships and Concepts #Geometry #grade7 Use facts about #supplementary, #complementary, #vertical, and #adjacent #angles in a multi-step problem to write and solve simple equations for an unknown angle in a figure. Based on Common Core standard #7.G.5. 6 Questions by Math_by_Kahoot 08/30/2017 answers Play 5.1K plays What are adjacent angles? Two angles that have a sum of 90°. Two angles that have a sum of 180°. A pair of opposite angles formed by two intersecting lines. Two angles that share both a side and a vertex. Angles 1 and 2 are an example of _______________ angles. complementary supplementary vertical adjacent What is the measure of ∠A? 15° 75° 105° 115° What is the measure of ∠x? 57° 67° 77° 157° Angles A and B are supplementary. Which equation can be used to find the value of x? x + x + 15 = 180 x + x + 15 = 90 x = x + 15 … and 7 more awesome questions! Check them out by clicking “Play”.