5. Calculate the perimeter of given polygons correct to one decimal place (a) A triangle with vertices P(-2,3).Q(5, -4) and R(1,8)
(b) A parallelogram with vertices A(-10,1), B(6, -2).C(14,4)
and D(-2,7)
(c) A trapezium with vertices E(-6, -2), F(1, -2), G(0,4) andH( -5,4)

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

-2/

what are you trying to solve here

step-by-step explanation:

$6.42

step-by-step explanation: