---
title: The perimeter of a rectangle is twice the length plus twice the widt… — A rectangle's area from its perimeter · tree and pragmatics
description: The perimeter of a rectangle is twice the length plus twice the width, so half the perimeter is length + width. Who acts: perimeter. A sentence of the lesson «A rectangle's area from its perimeter» of the lessons course of Mova's primary school with its dependency tree and the pragmatics of every cl
---

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# A rectangle's area from its perimeter, sentence 0

<!-- .ven lang=en -->
The perimeter of a rectangle is twice the length plus twice the width, so half the perimeter is length + width.

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**Who acts:** perimeter · **What happens:** be · **To what, where:** length

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This is a sentence of the lesson «A rectangle's area from its perimeter» of the lessons course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (perimeter), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:lessons:146-area-from-perimeter.lesson:0
# text = The perimeter of a rectangle is twice the length plus twice the width, so half the perimeter is length + width.
# source = school lesson (ours)
# course = lessons
# lesson = 146-area-from-perimeter.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×3
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	perimeter	perimeter	NOUN	NN	Number=Sing	9	nsubj	_	_
3	of	of	ADP	IN	_	5	case	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	5	det	_	_
5	rectangle	rectangle	NOUN	NN	Number=Sing	2	nmod	_	_
6	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	cop	_	_
7	twice	twice	ADV	RB	NumForm=Word|NumType=Mult	9	advmod	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	length	length	NOUN	NN	Number=Sing	0	root	_	_
10	plus	plus	CCONJ	CC	_	13	cc	_	_
11	twice	twice	ADV	RB	NumForm=Word|NumType=Mult	13	advmod	_	_
12	the	the	DET	DT	Definite=Def|PronType=Art	13	det	_	_
13	width	width	NOUN	NN	Number=Sing	9	conj	_	_
14	,	,	PUNCT	,	_	20	punct	_	_
15	so	so	ADV	RB	_	20	advmod	_	_
16	half	half	DET	PDT	NumForm=Word|NumType=Frac|PronType=Ind	18	det:predet	_	_
17	the	the	DET	DT	Definite=Def|PronType=Art	18	det	_	_
18	perimeter	perimeter	NOUN	NN	Number=Sing	20	nsubj	_	_
19	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	20	cop	_	_
20	length	length	NOUN	NN	Number=Sing	9	parataxis	_	Agree=R7-rel-agree|Haiku=9:conj
21	+	+	SYM	SYM	_	22	cc	_	Agree=R7-rel-agree|Haiku=22:case
22	width	width	NOUN	NN	Number=Sing	20	conj	_	Agree=R7-rel-agree|Haiku=20:nmod
23	.	.	PUNCT	.	_	9	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | the perimeter of a rectangle | the length plus the width |  |  |  | twice *property* | tree rules |
| 2 | **is a** | present | half perimeter | length + width |  |  |  |  | tree rules |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:lessons:146-area-from-perimeter.lesson:0`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R7-rel-agree ×3. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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