Angle Puzzle

Find the missing angle hidden in each diagram. Angle Puzzle is a geometry puzzle game about combining the properties of shapes. Explore triangles, parallel lines, regular polygons, congruence, inscribed angles and tangents. A different view of the diagram can reveal the next step. 320 PUZZLES, FOUR LEVELS Start with simple angle relationships and work toward problems that combine several ideas. There are 76 puzzle structures, with questions you can select and solve at your own pace. HELP THAT MAKES THE REASONING CLEAR Use three stages of hints and illustrated answers and explanations. Draw notes directly on the diagram to record angles or sketch an extra line. The illustrated guide and geometry mini dictionary help you revisit useful properties. BUILD A SHAPE COLLECTION Each puzzle you clear for the first time gives you one collection piece. Ten pieces complete a card. Discover all 32…