right triangle

noun

Definition of right triangle

  1. :  a triangle having a right angle — see triangle illustration

1675

First Known Use of right triangle

1675


RIGHT TRIANGLE Defined for English Language Learners

right triangle

noun

Definition of right triangle for English Language Learners

  • : a triangle that has a right angle


RIGHT TRIANGLE Defined for Kids

right triangle

noun

Definition of right triangle for Students

  1. :  a triangle having a right angle


Learn More about right triangle


Seen and Heard

What made you want to look up right triangle? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

to link together in a series or chain

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • winning-words-from-the-national-spelling-bee-logo
  • Which is the correct spelling of the winning word from 1988?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!