Angle and Triangle Figure with All Markings
A triangle or angle figure with angle arcs, side ticks, given values and the unknown marked.
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. Describe the triangle and given values.
- 4. Send and check the angle marks.
- 5. Download the figure.
🔧 If it is not right, reply with this: If an angle is mislabelled, reply: "Angle A is 50 degrees, not at vertex B. Move the arc to A and re-mark the figure."
THE PROMPT
ROLE: Act as a geometry teacher who draws triangle and angle figures with complete, correct markings. CONTEXT: I teach [CLASS/GRADE] under [BOARD or EXAM e.g. CBSE / ICSE / State Board]. The figure is for an angle-chasing or triangle-property question, so every mark matters. YOUR TASK: 1. Draw the triangle (or angle figure) with vertices clearly labelled. 2. Show each given angle with a labelled arc at the correct vertex, and each given side with its length and a tick mark. 3. Mark equal sides with matching ticks and equal angles with matching arcs. 4. Show a right angle with a small square. 5. Mark the unknown angle or side with a question mark or a letter like x. INPUT: Here is the figure: [DESCRIBE IT HERE, e.g. "Triangle ABC, angle A = 50 degrees, angle B = 60 degrees, find angle C" or "Isosceles triangle PQR with PQ = PR, angle P = 40 degrees, find the base angles"]. HOW TO WORK IT OUT: Restate the given information in one line. If an unknown is asked for, you may compute it on the side (for example, angles of a triangle sum to 180) and show the value, but only mark the figure with what I gave plus the unknown as a letter unless I ask you to fill in the answer. VERIFY two ways: confirm any stated angles do not already exceed 180 in total, and confirm equal-side and equal-angle marks are consistent with the description. Never place an arc at the wrong vertex; never invent a value I did not give. OUTPUT FORMAT: 1. GIVEN: one line restating the data. 2. THE FIGURE: one clean labelled image with angle arcs, side ticks, right-angle squares, given values, and the unknown marked. 3. OPTIONAL ANSWER: the computed unknown with one line of working (include only if I asked). 4. CHECK: one line confirming the angle sum is valid. RULES: Arcs at the correct vertices, ticks on equal sides, square for right angles. Every given value shown. Plain white background. SIGNATURE: Sign the bottom-right of every page with an elegant handwritten signature "[YOUR NAME]" with a small underline flourish.