Question

Plot the points A(2, 5), B(-2, 3) and C(5, 4) on the graph paper and find the area of ΔABC.​

Answer 1

Answer:

ar(∆ABC)=1/2[X1(y2-y3)+X2(y3-y1)+X3(y1-y2)]

=1/2[2(3-4)+(-2)(4-5)+5(5-3)]

=1/2[2×(-1)+(-2)(-1)+5×2]

=1/2[-2+2+10]

=1/2(10)

=5units