Cozy Room Mini Escape – Hard Shape Riddles

The riddles are all about shapes. Think like a geometer to collect the key letters and escape.

Puzzle Panel

Click a hidden spot in the cozy room to begin.
Each hotspot reveals a harder riddle about 2D shapes or angles. The riddles do NOT match the objects. Answer with a single shape or angle name (one or two words).
Key letters you’ve discovered: _ _ _ _ _