In this video, let's see how to find the area of a triangle.
Let's take an example of a triangle over here.
Now, let me make a copy of this triangle over here.
Let me rotate this triangle and let me play it side by side.
All right, but you can see that I get a parallelogram over here, right?
This is a parallelogram.
Now to know more about a program, check this section on programs under quadrilaterals.
All right.
Over here, you can see that this site is being decided to be right.
Remember, because we took a triangle and made a copy of it.
But the sides have to be equal.
So these two sides are equal and these two sides are equal.
Now, over here, this angle and this angle also are equal.
Why is that so?
Because we started with making a copy of the triangle.
We started with this triangle.
We made a copy of it and we rotated it, therefore, because we made a copy.
These two angles are also equal ends because alternating angles are equal.
We can find that these two lines are parallel.
Right.
So as angle one is equal to angle two, therefore these two lines are parallel and hence this is a parallelogram,
right?
All right, now you will see that in the case of the triangle, it's half the area of this program,
the area of a triangle is equal to half the area of a parallelogram.
And in the section in Parlo Grams, you can find how we found the area of a program.
Let me quickly summarize it over here in this program.
The height between these two parallel lines is each.
Right, and when we take the heat, we always take the perpendicular height to the perpendicular distance
between these two lines is each and the area of a program is based in height.
Now, we have seen that the area of the triangle is half the area of the parallelogram, that is equal
to half base in height.
Now, this is the first formula that we study or the area of a triangle.
We learn more ways of finding the area of a triangle in future areas.
But this is the basic formula.
Area of a triangle is equal to half in the base into its corresponding height.