Midpoint and distance formula zombie worksheet

Consider two points in a two dimensional coordinate plane

As you know mid point of a line joining two points is the coordinate of the middle point of only that portion of line joining between two points.

As we know distance formula gives the Distance between line joining two points in two dimensional coordinate system.It is always positive.

Distance formula gives the distance between two points, whereas Mid point formula gives coordinate of the middle point.

can someone me: the midsegment through the legs of an isosceles triangle is 4 in. find the sides of the triangle if its perimeter is 20 in. ,   and point g is the centroid of the right △abc with hypotenuse ab=18 in. find cg.