forma

Forma Visuals

Draw a geometry figure

Describe what is built from what: midpoints, intersections, perpendiculars. Coordinates are worked out for you, and the properties the figure states are checked before you see it.

For teachers, students and the people who write their books.

Connect your agentUse the APITry it in the console

01 What you send

A request in plain words.

Source in the format you picked and the version of the rules it passed. Forma can draw an answer it returned, free.

intent

The figure you want, in plain language: what is constructed from what.

format

The format to return.

02 Real answers

As returned, with the request that produced each.

Circumcircle construction

vector-graphics · tikz

Circumcircle construction

“Triangle ABC. Draw the perpendicular bisectors of AB, BC and CA, mark the point O where they meet, and draw the circle centred at O through A, B and C. Check that O is the same distance from A, B and C.”

valid · vector-graphics@0bd7c5a4

Incircle construction

vector-graphics · tikz

Incircle construction

“Triangle ABC. Mark the incenter I, where the angle bisectors meet, draw the segments AI, BI and CI, and draw the circle centred at I that touches all three sides. Check that the circle is tangent to AB, BC and CA.”

valid · vector-graphics@0bd7c5a4

Triangle ABC with its three medians meeting at the centroid GEach median runs from a vertex to the midpoint of the opposite side: A to M_A, B to M_B, C to M_C. All three pass through G.ABCMAMBMCG
vector-graphics · tikz

“Triangle ABC with the midpoints of each side, the three medians, and the centroid G where they meet; check that each median passes through G.”

valid · vector-graphics@c738bf88

Drawn from the returned TikZ.

Examples

A figure for the work you do.

Each opens the console with the request filled in.

All geometry figure examples →

Educators

03 Limits

What a verdict does not tell you.

  • Measurements you write are not compared with the drawing, and a point can be moved so a stated property holds: read the source.
  • Asked for A at (0,0), B at (4,0) and C at (2,1), checked collinear, Forma returned a valid figure with C moved onto AB.

04 Questions

Before you start.

One credit, $0.01, per answer. A valid and an invalid verdict each cost a credit; a failure on our side never does. Pricing

Can I print it or put it in a worksheet?

Typeset the TikZ, MetaPost or PiCTeX source in your document, or open it in the free editor for that format and download SVG or PNG.

05 Also in Forma Visuals