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freeCodeCamp/curriculum/challenges/english/10-coding-interview-prep/project-euler/problem-223-almost-right-angled-triangles-i.md
gikf a9418a1fe9 fix(curriculum): clean-up Project Euler 221-240 (#42839)
* fix: clean-up Project Euler 221-240

* fix: corrections from review

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>

Co-authored-by: Tom <20648924+moT01@users.noreply.github.com>
2021-07-15 14:26:34 +02:00

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---
id: 5900f44b1000cf542c50ff5e
title: 'Problem 223: Almost right-angled triangles I'
challengeType: 5
forumTopicId: 301866
dashedName: problem-223-almost-right-angled-triangles-i
---
# --description--
Let us call an integer sided triangle with sides $a ≤ b ≤ c$ barely acute if the sides satisfy $a^2 + b^2 = c^2 + 1$.
How many barely acute triangles are there with perimeter $≤ 25\\,000\\,000$?
# --hints--
`almostRightAngledTrianglesOne()` should return `61614848`.
```js
assert.strictEqual(almostRightAngledTrianglesOne(), 61614848);
```
# --seed--
## --seed-contents--
```js
function almostRightAngledTrianglesOne() {
return true;
}
almostRightAngledTrianglesOne();
```
# --solutions--
```js
// solution required
```