Question

plz answer 2nd question i will definitely mark as brainliest

Answer 1

In triangle RBT
Line AS ||lineBT
So angle 2 =angle5 AA test 1
Angle 3 = angle 2 given 2
Angle 5= angle 4 given 3
Angle 1 =angle 4 CA test 4
From 1 2 3 4
Angle 3=angle 5 = angle 4
So by equilateral triangle test
Angle 1= 60*

Answer 2

as || bt
so, 5=4. given
5=2. corresponding angles
2=3. given
so, 5=4=3 which means it is an equilateral triangle
so, 3=4=5=60 degree
so,1+2+3=180. linear pair
=1=180-60-60
=1=60 degree