A straight line is split into two adjacent angles labeled (x + 20)° and 3x°, visually showing why angles on a straight line must sum to 180°. The animation sets up the equation x + 20 + 3x = 180, simplifies step by step, and solves for x = 40, then plugs the value back in to confirm both angles total 180°. Useful for students learning linear pairs and algebraic equation setup in geometry.
Narrated · 16:9 · Preview before teaching · automatic layout checks do not establish subject accuracy
Two supplementary angles measure (x + 20)° and 3x°. What is x? Talk about how two angles in a straight line must equal 180 Color Scheme: #17271F #D5F34A #F5F6F0 #B7C4BA Lighter color should be used as background. Audience: 13-19