Answer:
K=8
Step-by-step explanation:
The triangles are similar so you can set up the porpotions: 3/6=4/k then you cross multiply and solve for k
If you find a first you will be able to find b a little faster then it is super easy after that you got this!
A triangle's angles will always equal up to 180. Since you already have to of the angles, you will add them up together. 30+20=50. Then, you take 180 and subtract it by the sum of the two previous angles. 180-50=130. Now you know the last angle is 130. You also know that the missing angle is also 130. The reason for that is because the two angles are the exact same if you look at it.
