--- title: Perimeter: all the way round a triangle — a lesson of Mova's school · trees and pragmatics description: «Perimeter: all the way round a triangle», a lesson of the lessons course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: The perimeter of a shape is the length all the way round it: add the lengths of all its sides. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Lessons](https://md.mova.elamur.ai/free/en/corpora/school/lessons/) / Perimeter: all the way round a triangle # Perimeter: all the way round a triangle Lesson 136 of the lessons course of Mova's primary school: 4 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). - [0](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/0/) — The perimeter of a shape is the length all the way round it: add the lengths of all its sides. - [1](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/1/) — A triangle has 3 sides. - [2](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/2/) — If one side is 5 cm and each of the other two is 3 cm longer, they are 8 cm each. - [3](https://md.mova.elamur.ai/free/en/corpora/school/lessons/136-perimeter-of-a-triangle/3/) — Then the perimeter is 5 + 8 + 8 = 21 cm. - ← previous: [Hours and minutes](https://md.mova.elamur.ai/free/en/corpora/school/lessons/135-hours-and-minutes/) - next →: [Brackets in a story: first the group, then the groups](https://md.mova.elamur.ai/free/en/corpora/school/lessons/137-brackets-as-stories/) - ↑ back to [Lessons](https://md.mova.elamur.ai/free/en/corpora/school/lessons/)