Question

In the given figure , If ANGLE POR = 120 , Then the value of ANGLE PQR is 60. Justify your answer.

Answer 1

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$so$

$if \: por \: is120 \: degree \: pqr \: must \: be \: 60 \: degree$

$so$

$< pqr = 60$

$prs \: and \: pqr \: are \: supplement$

$so \: \: psr = 180 - pqr$

$psr = 120$