Interactive Protractor & Angle Classifier
Drag the angle arm or slider to construct any angle from 0° to 360°. Observe the angle name update in English and Irish!
Less than 90° / Níos lú ná 90°
An acute angle is a sharp angle that measures strictly between 0° and 90°.
A slice of pizza, scissors partly open, crocodile jaws snapping shut, corner of a triangle.
Set the protractor to exactly 90° (Right Angle / Dronuillinn)!
Treonna an Chompáis · 8-Point Compass Navigator
Master the 8 cardinal and intercardinal compass directions in Irish and English. Steer your ship safely into Galway Bay!
North · Tuaisceart (T)
An Tuaisceart · 0° / 360°
Pirate Bay Coordinate Treasure Hunt
Find the landmarks on the 10x10 coordinate grid! Remember the golden rule: Along the corridor, then up the stairs (x, y).
Find the Sunken Galleon!
Tap the grid square or enter the coordinates below:
🗺️ Bay Landmarks Legend:
Angle Duel · Rapid Math Quiz
Test your knowledge of acute, right, obtuse, reflex, and straight angles to win the Gold Compass!