Discover Area Of A Triangle Cuemath

Go back to  'Math Concepts'

July 8, 2020

Reading Time: 1 minute

Here’s a triangle whose base is b and height is h. We have to find the area of this triangle.

area of triangle

The Normal Way

Most eighth graders will be able to tell you that the area of a triangle is 1/2 x b x h. So, for example, if b is 8 cm and h is 6 cm, then the area of the triangle will be 1/2 x 8 x 6 = 24 cm^2. Teachers do teach kids this formula and how to apply it, but they don’t teach kids why this formula works? Was it pulled out of a hat? Did someone just dream it up? Of course not, but kids are never given the full story! And unfortunately, they don’t even ask for it – asking is something which is not encouraged!


The Cuemath Way

Cuemath takes a very different approach, believing in the principle that kids need to know the why behind the what. Here’s the same triangle. Now, we do a simple but very interesting thing – we complete the rectangle formed using the triangle’s base and height.

It’s easy to see that the left part of the triangle has an area half that of the left part of the rectangle, while the right part of the triangle has an area half that of the right part of the rectangle. Thus, the total area of the triangle is half the total area of the rectangle. But – what’s the total area of the rectangle? b x h of course – that’s something we learn very early on. The triangle’s area is therefore 1/2 x b x h.


Cuemath lays special attention on the mathematical skill development of a child. Therefore, it provides students with specially designed teaching plans and maths-oriented learning games which helps them to improve their skill set and overcome the fear of Mathematics. It provides students with all the required resources which helps a kid to master mathematics. It has both an online and an application platform. There is also a Math gym app available for both iOS and Android offered by cuemath which provides plenty of opportunity for a student to learn and develop their skills. Personalised live classes help students to connect to their teachers in a better way on a Cuemath platform.