Answer:
b=40
Step-by-step explanation:
PQ=RQ
That means both sides are the same length which also means they both have the same angel measure of 140.
A super easy way to solve this would be to realize that where p is, the angel is 140.
A straight line is 180.
b and 140 are supplementary angels. [which means they equal 180]
To find b you can make an equation.
b+140=180
or
180-140=b
I'll show you both.
First one you would subtract 140 on both sides to get the variable alone, leaving you with b=40.
For the second one, you just do 180-140 and it also equals 40.
Either way it leaves you with b=40
If you need any more help with angels and whatnot, don't be afraid to reach out. I hope that helps! <3
