Question

please someone help to do both the no.4,5

Answer 1

4)here from angle sum property we get

y+150-x+x=180
y =180-150
y= 30


5)From angle sum property of straight line we get
x+70+20-x+PQR =180
90 +PQR =180
PQR =180-90
PQR =90

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Answer 2

4. Sum property of triangle:

   y+(150-x)+x=180

    y+150-x+x=180

               y=180-150

               y=30 degree

5. ∠PQT+∠TQS=∠PQS

                          =(20-x)+(x+70)

                          =20-x+x+70=90

Sum property of triangle:

∠PQS+∠PQR=180°

90+∠PQR=180°

∠PQR=180-90=90°

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