🖐️

Drag anythingMove a point — every bisector, circle and angle built on it follows, live.

🧲

Snapping talksLittle tags name what you'd grab: midpoints, thirds, intersections. Hold Ctrl/Cmd for none.

🎯

Select → actions appearEvery click adds to the selection; the bar below offers exactly what fits it. Drag empty space to box-select.

📐

AnglesTwo lines → Angle between. A point on a line or curve → ∠ N° line or Tangent — angles that hold while you drag.

⬠

ShapesPick △ ◻ ⬠ ⬡ under the Shape tool, draw corner to corner. Spin by any vertex, move by the ✛ center.

📈

GraphsType x^2/4 or sin(x). Points ride the curve; limits crop it; lines intersect it.

🎚️

SlidersType a*x+b — unknown letters become sliders (top right). Drag them to morph the curve; the ≋ button sweeps a slider's whole range and draws the entire family at once.

🔗

Link & unlinkUnlink names each link in plain words and breaks the ones you pick. A free point resting on a target offers Link to attach it back.

💾

It saves itselfFiles live in your browser (☰), export as JSON anytime, and everything works offline.

Welcome to GeoFlow