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  1. Triangle Calculator

    This free triangle calculator computes the edges, angles, area, height, perimeter, median, as well as other values and a diagram of the resulting triangle.

  2. Triangle - Wikipedia

    A triangle has three internal angles, each one bounded by a pair of adjacent edges; the sum of angles of a triangle always equals a straight angle (180 degrees or π radians). The triangle is a plane figure …

  3. Triangles - Equilateral, Isosceles and Scalene - Math is Fun

    A triangle has three sides and three angles. The three angles always add to 180°. There are three special names given to triangles that tell how...

  4. The Geometry of Triangles - Cool Math

    The sides, a and b, of a right triangle are called the legs, and the side that is opposite to the right (90 degree) angle, c, is called the hypotenuse. This formula will help you find the length of either a, b or …

  5. Triangle - Math.net

    A triangle is a closed, two-dimensional shape that has 3 sides, 3 angles, and 3 vertices. It is the polygon with the fewest sides. Since it is the simplest form of a polygon, any polygon can be constructed …

  6. Rules of a Triangle- Sides, angles, Exterior angles, Degrees and other ...

    Triangle Calculator (This free online tool lets calculates all sides and angle measurements based on your input and draws a free downloadable image of your triangle!)

  7. Triangle: Definition, Parts, Properties, Types, Formulas - Math Monks

    May 13, 2024 · What is a triangle – find out its definition, parts, properties, different types with their classifications and formulae of area and perimeter using diagrams

  8. Triangles | Geometry (all content) | Math | Khan Academy

    Test your understanding of Triangles with these 10 questions. You probably like triangles. You think they are useful. They show up a lot. What you'll see in this topic is that they are far more magical and …

  9. Triangle definition and properties - Math Open Reference

    It is usual to name each vertex of a triangle with a single capital (upper-case) letter. The sides can be named with a single small (lower case) letter, and named after the opposite angle.

  10. Triangles - Definition, Properties, Formula | Triangle Shape

    Let us read more about the triangle shape, the definition of a triangle, the parts of a triangle, the kinds of triangles and the properties of triangles on this page.