It categorizes triangles into equilateral, isosceles ... It introduces the formula for calculating the area of a triangle and explains the Pythagorean theorem, which applies to right triangles ...

The width and height of the rectangle become \(a\) and \(b\) in the formula and \(c\) is the ... the length of the diagonal EG is 7.2 cm. An isosceles triangle has two sides of the same length ...

This means that this triangle is isosceles. An isosceles triangle has two sides that are congruent (equal) in length. Even if the measurements were not labelled, you would still know it is an ...

You may hear students say words like ‘paralyzed’ triangle for isosceles and equilateral triangles after noticing the restrictive movements of these triangles upon dragging. Properties of symmetry: - ...