数形智拍 vs SectionLab

数形智拍（GeoSnap） 是一款为初中、高中学生及家长打造的几何学习工具。拍下一道几何题，AI 会为你还原题目图形、给出完整解题步骤，并配上清晰的解题作图——不是一个冷冰冰的答案，而是一条看得懂、学得会的思路。 但 GeoSnap 想做的，远不止「解题」。 ** 一拍即解 · 从题目到思路** • 拍照或从相册选图，自动识别题面与已知条件 • 完整解答分步呈现，关键步骤配套几何作图 • 覆盖初中 / 高中两套难度，压轴题也能拆解讲透 • 识别有偏差？可随手修正题干与题图，再重新求解 **《几何原理》· 一套完整的几何体系** • 源自 Birkhoff 四条公理，逐步推得 **138 条定理、24 条派生定义**，覆盖 11 大题域 • 每条定理都以「已知 / 求证」的题目形式呈现，配几何图形、前置依赖与推论 • 从一个个孤立的结论，走成一张彼此支撑的知识脉络 ** 证明图谱 · 看见知识的骨架** • 142 个节点、300+ 条依赖关系，组成可缩放、可拖拽的证明知识图谱 • 一眼看清「这条定理靠什么证出来、又能推出什么」 ** 证明征途 · 真正把定理「证」下来** • 每日推荐一题，先证它最划算 • 亲手写证明、拍照上传，AI 逐条校验你的逻辑是否成立 • 通过即点亮，学习进度云端同步 • 10 条免费示例证明，无需登录先睹为快 无论你是想快速搞懂一道难题，还是系统地把初高中几何学扎实，GeoSnap 都会陪你从「会做这道题」，走到「真的懂了」。 现在就拍下你的第一道几何题吧。 使用条款 (EULA)：https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

SectionLab transforms abstract geometry into a hands-on, visual experience. Perfect for students, teachers, and anyone curious about how 2D relates to 3D. BUILD mode — See 2D become 3D Watch flat shapes transform into solid objects through three different mechanisms: • Rotate: Spin a rectangle into a cylinder, a triangle into a cone, or a semicircle into a sphere • Translate: Extrude a circle upward to form a cylinder, or a square into a cube • Roll: Curl a flat plane into a cylindrical surface Drag the progress slider to control how far the transformation goes, or hit Auto Play for a seamless demonstration. CUT mode — Slice 3D shapes to see inside Choose from five geometric solids (cube, cuboid, cylinder, cone, triangular prism) and cut them with an adjustable slicing plane: • Move the cutting plane up/down and tilt it in any direction • Pull the two halves apart to examine the cross-section in detail • Toggle visibility of each half to focus on either side • Use the Cross-Section Dictionary for instant access to classic cuts (circle, ellipse, triangle, hexagon, and more) Why SectionLab? • Fully interactive 3D — pan, rotate, and zoom with touch gestures • No internet required — all 3D rendering runs locally • Multi-language support: English, 中文, 日本語, 한국어 • iPad-optimized with large touch targets • Clean, distraction-free interface designed for focused learning Perfect for: - Middle school and high school geometry students - Teachers looking for classroom demonstration tools - Self-learners exploring spatial reasoning - Anyone curious about the math behind 3D shapes