Question

tell me the solution please​

Answer 1

Step-by-step explanation:

draw a line parallel to pQ andST at R

now use alternate interior and sum of angle of 180°

Answer 2

Answer:

Step-by-step explanation:

Ans :  

Let us draw a line XY parallel to ST and passing through point R.

P Q R +□ QRX = 180

∘

(Co-interior angles on the same side of transversal QR) □

110 ∘+ □Q R X =180

∘

□Q R X= 70

∘

Also □

RS T+ □ S R Y = 180

∘

 (Co-interior angles on the same side of transversal SR)

130 ∘ + □ S RY = 180

∘ □S R Y = 50

∘

XY is a straight line. RQ and RS stand on it.

□ Q R X + □Q R S + □ S R Y = 180

∘70 +□Q R S + 50 ∘ = 180 ∘  

Q R S = 180 − 120 =60