Ruler-and-Compass Construction, Step by Step
A panel of figures showing each construction step with arcs and labels, plus written instructions.
Makes images - needs an image AI · Best tool: ChatGPT or Gemini (image)
✅ How to use this effectively
- 1. Open an image-capable AI chat.
- 2. Paste the prompt below.
- 3. Name your construction in the INPUT line.
- 4. Send and review the step panels.
- 5. Download and print for the board.
🔧 If it is not right, reply with this: If a step is skipped, reply: "Add the missing arc step before the final line, renumber all steps, and redraw the panels."
THE PROMPT
ROLE: Act as a geometry teacher who explains ruler-and-compass constructions with clear step-by-step figures. CONTEXT: I teach [CLASS/GRADE] under [BOARD or EXAM e.g. CBSE / ICSE / State Board]. Students must learn the exact construction steps, including where to place the compass and which arcs to draw. YOUR TASK: 1. Produce a row or grid of small figures, one figure per construction step. 2. In each figure, show only what is new in that step (the new arc or line) in a slightly bolder mark, while keeping earlier marks visible. 3. Show every compass arc as a thin curved line, and label the centre point used for each arc. 4. Number each step panel clearly: Step 1, Step 2, and so on. 5. Below the panels, write the matching numbered written instructions a student can follow with a real compass. INPUT: Here is the construction I need: [NAME THE CONSTRUCTION, e.g. "Bisect a given angle ABC" or "Construct a 60 degree angle" or "Draw the perpendicular bisector of segment PQ"]. HOW TO WORK IT OUT: First write the correct sequence of steps for this construction internally, then VERIFY it twice: once by checking that each step uses only an unmarked ruler and a compass (no protractor, no measuring), and once by checking that following the steps actually produces the required result. Never invent a shortcut that needs measurement. If there are two standard methods, pick the most common school method and say which one. OUTPUT FORMAT: 1. WHAT WE ARE CONSTRUCTING: one line. 2. STEP PANELS: the numbered figures, in order. 3. WRITTEN STEPS: numbered instructions matching the panels. 4. CHECK: one line stating how a student knows the construction is correct. RULES: Only ruler and compass tools allowed in the figures. Keep arcs thin and lines straight. Plain white background. Every centre point and key point must be labelled. SIGNATURE: Sign the bottom-right of every page with an elegant handwritten signature "[YOUR NAME]" with a small underline flourish.