Gonio: Angle Puzzle

By Yasin Halit Karayagiz on AppTrack Ninja.

Chase the missing angle

One angle in the figure is marked with a question mark. Chase it. Not a calculator, not a worksheet — a chase. Each step you take opens the next one, until the marked angle has nowhere left to hide. HOW TO PLAY - Look for an angle you can settle right now from the values already on the figure - Apply one rule: angles in a triangle make 180, angles on a straight line make 180, vertical angles are equal, parallel lines give equal corresponding and alternate angles, the base angles of an isosceles triangle match - Write that value in and it becomes ammunition for the next step - Keep going until…

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