Question

Q4) In fig PQIIST, find the value of Angle QRS
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Answer 1

Answer:

60°

Step-by-step explanation:

as I have given this image ...I supposed the imaginary lines which make transversal to each angle given

let' the line in QRS angle be I

here you can see that the angle <20° is transversal to angle <QRI and angle <40° is transversal to angle <IRS

so the angle <QRS is 40°+20° = 60°

you can easily solve this if you know the concept of transversal angles