AI 几何图像求解器

The AI Geometry Image Solver lets you upload a photograph of a geometry problem and have the AI read the figure, transcribe the printed text, and solve the problem step by step. This is the most powerful AI tool when you have a textbook page, a whiteboard photo, or a handwritten worksheet in front of you and don't want to retype the entire problem. This tutorial covers what kinds of images work best, how to set up your photo for maximum AI accuracy, and what to expect from the output.

What this tool does

You upload an image showing a geometry problem (typically with a figure + question text). The AI Vision system:

1. Reads the figure — identifies geometric elements (triangles, circles, points, lines) and any printed labels (vertex names, side lengths, angle measurements).
2. Reads the text — transcribes the printed problem statement, given conditions, and "find the..." or "prove that..." instruction.
3. Identifies the problem type — area calculation, angle finding, congruence proof, similarity setup, etc.
4. Solves it — applies the relevant formulas and theorems, showing the chain of reasoning.
5. Returns the answer — final numerical value (with units), or completed proof (in two-column format), with full step-by-step working.

Image formats and quality

Accepted formats: JPEG, PNG, GIF, WebP.

Image quality matters. For best results:

• Resolution: at least 800 pixels in the smaller dimension. Smartphone photos at default settings are usually fine.
• Lighting: even, no shadows across the figure. Avoid harsh side-lighting that creates dark zones.
• Focus: sharp. Out-of-focus images degrade OCR accuracy significantly.
• Cropping: include the relevant problem AND its figure together. Don't crop too tight.
• Orientation: upright. The AI handles slight tilt but heavily rotated images may need straightening first.

What works well

• Printed textbook problems (clear typography, clean diagrams).
• Whiteboard photos (high-contrast marker on white).
• Handwritten problems with neat printing (block letters, large numbers).
• Computer-generated figures (PDFs, online worksheets).
• Worksheets with multiple choice answers visible.

What works less well

• Cursive handwriting (the AI may misread).
• Very faint pencil on white paper (low contrast).
• Complex figures with many overlapping elements (the AI may misread which line is which).
• Figures with very small labels (under 8 px on screen).
• 3D figures shown from non-standard angles (the AI mostly trains on 2D diagrams).

Worked example — what happens after upload

Suppose you upload a photo showing:

"In triangle ABC, ∠A = 50°, AB = 8, AC = 10. Find BC."

[diagram of triangle with labels]

The AI returns something like:

"This is an SAS configuration — you have two sides (AB = 8, AC = 10) and the included angle (∠A = 50°). The third side BC can be found using the Law of Cosines:

BC² = AB² + AC² − 2·AB·AC·cos(A)

BC² = 64 + 100 − 2·8·10·cos(50°)

BC² = 164 − 160·0.6428

BC² ≈ 164 − 102.85 ≈ 61.15

BC ≈ √61.15 ≈ 7.82."

The AI handles parsing, formula choice, calculation, and explanation in one shot.

What if the AI misreads the image?

This happens occasionally — a "0" mistaken for "O", a "1" misread as "I", etc. Symptoms:

• The AI references values that aren't in your problem.
• The solution uses a different formula than you expected.
• The final answer seems off.

Workaround: re-upload with a sharper, larger photo OR switch to the text-based AI Solver and type the problem out yourself.

Privacy and your photos

Photos you upload are sent to a third-party AI service (OpenAI, Anthropic, or DeepSeek-VL depending on routing) for processing. They are not stored permanently on our servers, but the AI service may retain them per their privacy policy. For sensitive content (exam questions, IP-protected diagrams), be aware that the image leaves your device.

Credits and cost

Each image solve uses 3 credits — the same as text-based AI solves. New accounts receive 30 free credits, enough for about 10 image solves. See Pricing for higher-volume plans.

When to use this vs other tools

Common mistakes when using image upload

• Blurry photos. Even a slight blur degrades text recognition. Take a sharp photo.
• Wrong orientation. Rotate so text is upright before uploading.
• Crowded image. If a textbook page has multiple problems, crop to just one. The AI tries to solve everything in view, which can confuse it.
• Expecting the AI to read all handwriting. Print clearly, especially numbers. Cursive can fail.
• Forgetting to verify the answer. The AI is usually right but not infallible. Cross-check with a specialized calculator when possible.