# Girih — Angles Puzzle | Mathallery

Source: https://mathallery.com/games/girih/

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# Girih

Angles · 30 levels

Fill the hole in the tiled wall so every line joins.

## How to play

- Pick a tile from the tray, then tap the hole where it should go. It snaps edge to edge; turn it with ⟲ ⟳.
- All corners are multiples of 36°. Tiles must fit inside the hole without overlapping, corner to corner.
- Use every tile in the tray to fill the hole. The golden lines join into unbroken stars. Tap a placed tile to take it back.

Look at the corners of the hole first: a 36° notch takes a rhombus or bowtie tip (72°) only if two of them meet, a 108° corner fits a pentagon or a rhombus, 144° fits the decagon or hexagon.

[Open Girih](https://mathallery.com/#/play/girih/1)

Teeter, Tint and Echo Heist are free starters. Other games unlock through earned game choices or permanent packs. Your progress stays in the browser; optional sign-in saves it to your website account.