Mathematicians struggled to find the fewest number of pieces needed to cut an equilateral triangle and rearrange it into a perfect square. The problem, known as “Dudeney’s dissection” or the ...

The interior angles in a triangle always add up to 180º. An equilateral triangle has 3 sides of equal length. The dashes on the lines show they are equal in length. All of the angles are also equal.

Keywords triangles, properties, types, equilateral, isosceles, scalene, congruency, area, Pythagorean theorem, right triangle, mathematics, architecture, engineering Email us at footage@avgeeks ...

ABC is an equilateral triangle with sides of length 3 units.ABC has an area coloured in, like this. Its big brother XYZ has sides of 4 units long.XYZ also has a coloured in area. Can you work out ...