Question

lines and angles ques

Answer 1

in∆QRT by angle sun property
angle QTR+angle TRQ +angleRQT=180°
40°+90°+x= 180
x=50°
in triangle PRS by angle sum property
angle P + x + PSR=180°
30+50+ PSR= 180
PSR=100
angle y +angle PSR = 180° ( sum of aungle in one line)
y= 180-100
y=80°

Answer 2

if we consider the triangle QTR
angle Q+angle T+angle R=180
40+90+x=180
130+x=180
x=50
consider triangle PSR
angle P+angle S+angle R=180
30+angle S+50=180
angle S=100
angle S+y=180 .. supplymentory
y=80