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in the figure, PQ||ST, RS||UV. If PQR = 35o and QRS = 65o, find STV

Mathematics
JAMB 1986

in the figure, PQ||ST, RS||UV. If PQR = 35o and QRS = 65o, find STV

  • A. 30o
  • B. 35o
  • C. 55o
  • D. 65o
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Correct Answer: Option A
Explanation

Draw a line WX through R and parallel to \(\overline{PQ}\) and \(\overline{ST}\) as shown in the diagram above

X\(\widehat{R}\)Q = P\(\widehat{Q}\)R = 35º

X\(\widehat{R}\)Q + X\(\widehat{R}\)S = 65º

35 + x = 65

x = 65 - 35 = 30º

R\(\widehat{S}\)T = 30º (Alternative angle)

S\(\widehat{T}\)V = 30º (Alternative angle)


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