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## Acute and obtuse triangles - Wikipedia

en.wikipedia.org/wiki/Acute_and_obtuse_triangles

An acute triangle is a triangle with all three angles acute (less than 90°). An obtuse triangle is one with one obtuse angle (greater than 90°) and two acute angles ...

## Definition of Acute Triangle - Math is Fun

www.mathsisfun.com/definitions/acute-triangle.html

Definition of. Acute Triangle. more ... Acute Triangle. A triangle that has all angles less than 90° (90° is a Right Angle). See: Obtuse Triangle. Any Scalene

## What are Acute, Obtuse, and Right Triangles? | Virtual Nerd

www.virtualnerd.com/pre-algebra/geometry/triangles/define-triangles/triangle-acute-obtuse-right-definition

Knowing how to identify these triangles is an important part of solving many ... definition; triangle; triangles; acute; acute triangle; acute triangles; obtuse; obtuse  ...

## Definition and examples Acute Triangle | define Acute Triangle ...

www.icoachmath.com/math_dictionary/acute_triangle.html

Acute Triangle is a triangle with its angles less than 90 degrees...complete information about the Acute Triangle, definition of an Acute Triangle, examples of an ...

## Cool math .com - Types of Triangles

www.coolmath.com/reference/triangles-types

Obtuse triangles aren't very smart. (Look up "obtuse" in the dictionary!) Obtuse triangles have one angle that is greater than 90 ...

## Acute angle | Define Acute angle at Dictionary.com

www.dictionary.com/browse/acute-angle

Acute angle definition at Dictionary.com, a free online dictionary with pronunciation, ... As in the triangle aei, let the angle at i, be taken for an acute angle.

## Acute Triangle | Acute Triangle Properties | Math@TutorVista.com

math.tutorvista.com/geometry/acute-triangle.html

Triangles play a very important role in almost all the branches of mathematics. Just to recall that a triangle is defined as a plane figure bounded by three line ...

## Triangle Classification

www.cut-the-knot.org/triangle/Triangles.shtml

Triangle Classification: as regard the sides and the angles. ... Acute (all angles are acute); Right (one angle is right); Obtuse (one angle is obtuse) ... of ground is stirred up, the surface becomes "uneven," which was a later meaning of skalenos .

## Types of triangle - based on angles, right angle, obtuse, acute

www.easycalculation.com/trigonometry/triangle-types.php

a) Right Angled Triangle : - Right angle triangle is a triangle with one of its angle exactly equal to 90°. - As shown in the picture.

## Orthocenter of A Triangle. Defined with examples for acute, obtuse ...

www.mathwarehouse.com/geometry/triangles/triangle-concurrency-points/orthocenter-of-triangle.php

Orthocenter of a triangle. Explained with examples , illustrations and a cool HTML5 Applet --for acutes, obtuse and right triangles.

acute triangle | Define acute triangle at Dictionary.com
dictionary.reference.com/browse/acute triangle
The world's most popular free online dictionary with definitions, spell check, word origins, example sentences, audio pronunciations, Word of the Day and more!

### Acute triangle definition - Math Open Reference

www.mathopenref.com

Definition and properties of acute triangles. ... A triangle where all three internal angles are acute (less than 90 degrees). Try this Drag the orange dots on each ...

### What is an Acute Triangle? - Definition, Facts & Example - Video ...

study.com

In this lesson, you'll find out what makes a triangle an acute triangle. You'll also find some examples of what keeps a triangle from being acute....

### Acute Triangle -- from Wolfram MathWorld

mathworld.wolfram.com

A triangle which is neither acute nor a right triangle (i.e., it has an obtuse angle) is ... Wells, D. The Penguin Dictionary of Curious and Interesting Geometry.