Question

prove that a median of triangle divide it in two triangles of equal area​

Answer 1

Answer:

We can come up with a conjecture and say that, the median of a triangle divides the triangle into two triangles with equal areas. To show that this is always true we can write a short proof: Area of any triangle = half the base x height. In the triangles CMA and CBM, AM and MB are the bases respectively.

Answer 2

Answer:

Here is the proof.

Step-by-step explanation:

Let ABC be a triangle and Let AD be one of its medians.

In △ABD and △ADC the vertex is common and these bases BD and DC are equal.

Draw AE⊥BC.

Now area(△ABD)=

2

1

×base×altitude of△ADB

=

2

1

×BD×AE

=

2

1

×DC×AE(∵BD=DC)

but DC and AE is the base and altitude of △ACD

=

2

1

× base DC × altitude of △ACD

=area△ACD

⇒area(△ABD)=area(△ACD)

Hence the median of a triangle divides it into two triangles of equal areas.