what do you know to be true about the values of a and b

Answer:
d) cannot be determined.
Step-by-step explanation:
x + 60 + a = 180
40 + b + y = 180
Here we cannot find the missing angles because we should know angles to find a missing angle.
Therefore, answer d) cannot be determined.
Hope you will understand the concept.
Thank you.
Answer: D . Cannot determined
Step-by-step explanation:
In the given picture , we have two triangles .
In first triangle , we have three angles given as : 60° , a° and x °.
Here , measure of two angles is not given.
In second triangle , , we have three angles given as : 40° , b° and y °.
Here , measure of two angles is not given.
Also, the information that can link these two triangle is not given.
So , we cannot say anything about the measure of angles a and b.
Hence, he correct answer would be : D . Cannot determined