🧭 Angle Snap

$ man angle-snap

The grey line through A is the reference — it is labelled on the canvas. Each prompt asks for a stroke turned so many degrees from it, and says which way to turn in words. The amber arrow at A turns the same way, so you can check yourself before you commit.

You do not have to start at A. Press anywhere on the sheet and pull. Only the direction of your stroke is scored, so the drill slides your line onto A for you — there is nothing here to miss and nothing that can refuse your press.

Roughly 2° off is a perfect 100 and points fall to zero at about 27° off. On a short pull a couple of stray pixels really are a couple of degrees, so the free zone widens as the pull gets shorter, and widens again for a mouse or trackpad — the corner of the HUD says which hardware the drill graded for. A round is the average of six strokes, and the asked angles get subtler as you go.

Turn the right amount the wrong way and the drill says so — "right size, wrong way round" — and hands the item back free, once per item. Misreading which way to turn is not the same mistake as misjudging an angle.

After each stroke the true ray and an amber arc appear: the arc is a protractor, exactly the one from school, measuring from the reference to the truth. Press and hold to keep it on screen as long as you like; let go for the next one.

Studio tip: don't measure — commit. Your first read of an angle is usually within 10°; second-guessing drags it wider.