Answer:
70 degrees for both the unknown angles
Step-by-step explanation:
All angles in a triangle measures 180
So since congruent sides make congruent angles we can say that there will be two identical angles
Lets take the unknown angle as "x"
Since there are two unknown angles x becomes 2x
So
40+2x=180
Subtract 40 from both sides
2x=140
Divide by 2 on both sides
X=70
1/10 of .9 is the same as dividing .9 by 10.
.90 / 10 = .09
.09 is the answer
I’ve attached my work
b is your answer
I just drew a sketch of a graph and saw if it would be a line
You will need more information for people to answer this, and it depends on how big each piece is.