Triangle - Wikipedia

Triangles can be classified according to the lengths of their sides: An equilateral triangle has all sides the same length. An equilateral triangle is also a regular polygon with all angles measuring 60°. An isosceles triangle has two sides of equal length.

Triangles - Equilateral, Isosceles and Scalene

A triangle has three sides and three angles The three angles always add to 180° Equilateral, Isosceles and Scalene There are three special names given to triangles that tell how many sides (or angles) are equal.

Triangles | Puzzle Game

Triangles Rules. Triangles is a very simple game. The objective is to make as many triangles as possible, by drawing lines from one dot to another.

Types of Triangles (solutions, examples, videos)

Triangles are three-sided shapes that lie in one plane. Triangles are polygons that have three sides, three vertices and three angles. The sum of all the angles in any triangle is 180°.

Triangles | Article about Triangles by The Free Dictionary

Triangle It is the symbol for the Triple Goddess : Maiden -Mother- Crone. Inverted and with the tip cut off, it is a symbol for earth ; upright and with the tip cut off, it symbolizes air.

Types of Triangles - coolmath.com

Types of Triangles - Cool Math has free online cool math lessons, cool math games and fun math activities. Really clear math lessons (pre-algebra, algebra, precalculus), cool math games, online graphing calculators, geometry art, fractals, polyhedra, parents and teachers areas too.

Classifying triangles (video) | Shapes | Khan Academy

An equilateral triangle has all three sides equal, so it meets the constraints for an isosceles. So by that definition, all equilateral triangles are also isosceles triangles. But not all isosceles triangles are equilateral. So for example, this one right over here, this isosceles triangle, clearly not equilateral.

Triangles Side and Angles - mathwarehouse.com

To explore the truth of this rule, try Math Warehouse's interactive triangle, which allows you to drag around the different sides of a triangle and explore the relationship between the angles and sides.No matter how you position the three sides of the triangle, the total degrees of all interior angles (the three angles inside the triangle) is always 180°.

How to Calculate the Sides and Angles of Triangles

By definition, a triangle is a polygon with three sides. Polygons are plane (flat, two-dimensional) shapes with several straight sides. Other examples include squares, pentagons, hexagons and octagons. The name originates from the Greek polús meaning "many" and gōnía meaning "corner" or "angle."

Triangle definition and properties - Math Open Reference

The base of a triangle can be any one of the three sides, usually the one drawn at the bottom. You can pick any side you like to be the base. Commonly used as a reference side for calculating the area of the triangle. In an isosceles triangle, the base is usually taken to be the unequal side.