Question

find the area of the triangle formed by the points o(0,0) A(a,0)and B(0,h)

Answer 1

Answer:

Step-by-step explanation:

Area of triangle = 1/2 ( x1 ( y2-y3 ) + x2 ( y2 - y1 ) + x3 ( y1 - y2 )

= ah sq units

Answer 2

Answer:

The answer is ah/2.

Step-by-step explanation:

Let A(a=x1, 0=y1) , O(0=x2, 0=y2) , B(0=x3, h=y3)

area( ΔABC) = 1/2[x1(y2 - y3) + x2(y3 - y1) + x3(y1 - y2)] sq. units

                    = 1/2[a(0 - h) + 0(h - 0) +0(0 - 0)]

                    = 1/2[-ah + 0 + 0]

                    = 1/2[-ah]

                    = -ah/2

                    =ah/2         { Since the area of a triangle canno be in negative}