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Acute and obtuse triangles - Wikipedia


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


Triangles - Equilateral, Isosceles and Scalene ... Acute Triangle. more ... Acute Triangle. A triangle that has all angles less than 90° (90° is a Right Angle).

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


Note: Did you know that there are different kinds of triangles? Knowing how to identify these triangles is an important part of solving many problems involving ...

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


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....

Cool math .com - Types of Triangles


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

Triangles - Fact Monster


In an equiangular triangle, all the angles are equal—each one measures 60 degrees. An equiangular triangle is a kind of acute triangle, and is always ...

How many acute angles does a triangle have? | Reference.com


A triangle has either two or three acute angles, depending on the type of triangle. Right and obtuse triangles have two acute angles, whereas an acute triangle ...

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


In acute-angled triangles, all the internal angles are less than 90 degrees. An acute triangle may have the same lengths of sides or different side lengths.

Acute triangle - definition of acute triangle by The Free Dictionary

www.thefreedictionary.com/acute triangle

Noun, 1. acute triangle - a triangle whose interior angles are all acute. acute- angled triangle · triangle, trigon, trilateral - a three-sided polygon ...

Cynthia Lanius' Lessons:Impossible Triangles


Rules: 1. In any triangle, a + b > c b + c > a a + c > b. 2. In an acute triangle, c<sup>2</sup> < a <sup>2</sup> + b<sup>2</sup>. 3. In a right triangle, c<sup>2</sup> = a<sup>2</sup> + b<sup>2</sup>. 4. In an obtuse triangle, c<sup>2</sup> > a<sup>2</sup> + b<sup>2</sup>.

acute triangle | Define acute triangle at Dictionary.com
dictionary.reference.com/browse/acute triangle
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Acute triangle definition - Math Open Reference


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 ...

Acute Triangle -- from Wolfram MathWorld


A triangle in which all three angles are acute angles. A triangle which is neither acute nor a right triangle (i.e., it has an obtuse angle) is called an obtuse triangle.

Can the triangle be called both an acute triangle and an equilateral ...


Question from Jane, a teacher: If all sides of a triangle are the same length and all angles are 60 degrees, can the triangle be called both an acute triangle and ...