Interior angles in an equilateral triangle close equilateral triangle A triangle with all three sides of equal lengths. All the angles are 60°. ... Form an equation equal to 360˚.

Discusses the properties and types of triangles, explaining that a triangle is a closed figure with three sides and angles. It categorizes triangles into equilateral, isosceles, scalene, obtuse ...

Maths Formulas for Class 10: Get here the list of important and most used formulas for CBSE Class 10 Maths. ... Area of an Equilateral Triangle = A = (√3)/4 × side 2.

Henry Dudeney, a self-taught English mathematician and puzzle columnist, asked his readers to dissect an equilateral triangle into the smallest number of pieces that could be rearranged into a square.