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maks197457 [2]
3 years ago
5

In triangle ∆PQR, C is the centroid.

Mathematics
1 answer:
Lubov Fominskaja [6]3 years ago
3 0
Refer to the redrawn figure below.

Because C is the centroid, 
PZ = ZR;  QY = YR; and PX = XQ.

Part a.
If CY = 10, then PC = 2*CY = 20
PY = PC + CY = 20 + 10 = 30
Answer:
PC = 20
PY = 30

Part b.
If QC = 10, then ZC = QC/2 = 5
ZQ = ZC + QC = 5 + 10 = 15
Answer:
ZC = 5
ZQ = 15

Part c.
Given: PX = 20.
Because the median bisects side PQ, therefore PX = QX = 20
PQ = PX + QX = 40
Answer:
PQ = 40

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