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In Fig. 6.42, if lines PQ and RS inters...

In Fig. 6.42, if lines PQ and RS intersect at point T, such that `/_P R T=40^@,``/_R P T=95^@` and `/_T S Q=75^@,` find `/_S Q T`.

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In `/_ PRT`
`anglePRT+angleRPT+anglePTR=180^0`
`40^o +95^o +anglePTR=180^o`
`anglePTR=45^0`
`angleQTS=anglePTR`
`angleQTS=45^o`
`/_SQT`
`angleSQT+angleQTS+angleTSQ=180^o`
...
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