14. find the coordinates of the circumcenter for ∆def with coordinates d(1,1) e (7,1) and f(1,5). show your work.

1. in triangle ∆pqr, c is the centroid.a. if cy = 10, find pc and pyb. if qc = 10, find zc and zqc. if px = 20, find pq

The centroid C divides the length of each median PY, ZQ, and XR into the ratio of 2:1 as shown in the diagram below

a) CY = 10
    PC = 2×10 = 20
    PY = 20+10 = 30

b) QC =10
    ZC = 10÷2 = 5
    ZQ = 10+5 = 15

c) PX = 20
    PQ = 2×20 = 40