Three differentiated questions then reinforce understanding of angles in a triangle, use of a protractor and introduce an investigation about fitting different triangles into a 30cm square pizza box.

To solve the puzzle, the trio grouped possible dissections of an equilateral triangle based on how the cuts intersect its edges. First, they narrowed down the infinite ways to cut the triangle ...

2. If the goat is attached to the corner of a square barn with side length 4 by a rope of length 8, outside the barn, what’s the area of the region the goat has access to? 3. Suppose the goat is ...

Show answer Interior angles of equilateral and isosceles triangles The sum of interior angles in a triangle is 180˚. In an equilateral triangle, all three angles are equal to 60˚.

First, draw an equilateral triangle, then add three circles of equal radius around each corner. At the center of these circles, you’ll find a rounded shape that rolls like a circle with only a ...

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 ...