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title: Sides and corners of many shapes — a lesson of Mova's school · trees and pragmatics
description: «Sides and corners of many shapes», a lesson of the lessons course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: A triangle has 3 sides and 3 corners, a square 4, a pentagon 5 and a hexagon 6: a flat shape has as many corners as sides.
---

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# Sides and corners of many shapes

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Lesson 108 of the lessons course of Mova's primary school: 2 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/lessons/108-sides-and-corners-of-shapes/0/) — A triangle has 3 sides and 3 corners, a square 4, a pentagon 5 and a hexagon 6: a flat shape has as many corners as sides.
- [1](https://md.mova.elamur.ai/free/en/corpora/school/lessons/108-sides-and-corners-of-shapes/1/) — To count the sides of many shapes, multiply each kind by its number of sides and add: 2 triangles and 3 squares have 2 × 3 + 3 × 4 = 18 sides.

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- ← previous: [A missing side from the perimeter or the area](https://md.mova.elamur.ai/free/en/corpora/school/lessons/107-side-from-perimeter-or-area/)
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