Problem 2021. Is this triangle right-angled?

Created by Tanya Morton

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Given three positive numbers a, b, c, where c is the largest number, return true if the triangle with sides a, b and c is right-angled. Otherwise, return false.

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Last Solution submitted on Sep 18, 2025

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Sreeram Mohan on 24 Nov 2014

This is a good problem to refresh basic geometry

Joseph on 28 Sep 2015

The checking should include a random Pythagorean triple (given random natural numbers a>b: a^2-b^2, 2ab, and a^2+b^2 form a Pythagorean triple). For the checking right now, a~=2 passes the tests.

Rachel Wedemeyer on 5 Apr 2018

Basic triangle math plus if statements. Great example

Othmane ELMOUATAMID on 9 Aug 2018

This reminds me the old good days ... basic geometry as Sreeram Mohan said :)

nguyen thai son son on 27 Sep 2019

Brain clearance

Nikita Kukhtin on 24 Jun 2022

great problem!

峡胜 on 13 Jun 2024

i think it is meaningful

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Problem 2021. Is this triangle right-angled?

Solution Stats

Last 200 Solutions

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Solution Comments

Problem Recent Solvers6176

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Problem 2021. Is this triangle right-angled?

Solution Stats

Last 200 Solutions

Problem Comments

Solution Comments

Problem Recent Solvers6176

Suggested Problems

More from this Author10

Problem Tags

Community Treasure Hunt

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