Question

vFind the area of the triangle PQR formed by joining the midpoints of the sides of the triangle whose vertices are A(1,-2),B(3,2)C(-1,4).also find the triangle ABC

Answer 1

Answer:hope it helps

Step-by-step explanation:

Area of triangle =  \fraction{1}{2} [ x_{1} ( y_{2} - y_{3} )+ x_{2} ( y_{3} - y_{1} )+ x_{3} ( y_{1} - y_{2} )]

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

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

=1/2(-2+3(6)+4)

=1/2(-2+18+4)

=1/2(-2+22)

=1/2(20)

=10 v

Answer 2

Answer:

area of triangle ABC=10

area of triangle PQR=4×10 =40CM^2

Step-by-step explanation:

HOPE YOU UNDERSTAND

THANK YOU