Pythagorean theorem

Have you ever played with building blocks or Legos? Well, sometimes when we are building something we need to measure how long and how tall things are.

The Pythagorean Theorem helps us find out how long something is when we know how tall and how far away it is from us. It's like magic!

You see, the Pythagorean Theorem is kind of like a special formula or set of steps we can use to figure it out.

Okay, let's imagine that we have a triangle with two sides that we know the length of - let's call them A and B. The third side is what we want to find out - let's call that one C.

Here's what we do:

1. We start by drawing a square on each of the other two sides (A and B) - this is going to give us two smaller squares.

2. Then we add up the area of those two smaller squares.

3. Finally, we take the square root of that area and we get the answer - the length of the third side, C!

So, in simpler terms, if we have a right-angled triangle (one with a 90-degree angle), we can use the Pythagorean Theorem to find out how long one of the sides is when we know how long the other two sides are. It's like a very cool math trick that builders, engineers and architects use to help them build things safely and accurately.