An equilateral triangle is a type of polygon with three congruent sides and angles, each measuring 60 degrees. This simple yet elegant geometric shape has various applications in art, construction, ...

to build on students' knowledge of triangle and develop students' reasoning with properties of different classes of triangles to develop students' language related to different triangles to engage ...

A triangle is a polygon. It is a closed 3-sided shape made up of straight lines. The ‘tri-’ part of the word triangle means three. A triangle has 3 sides and 3 angles. Interior angles are the angles ...

Named for Plato, who theorized that the classical elements were made of these regular polyhedrons, three of the Platonic solids are composed of equilateral triangles: the tetrahedron, octahedron, and ...

The three angles in any triangle add up to 180°. You can use this information to find a missing angle. A scalene triangle has three different angles. To find a missing angle you need to know the other ...