Answer:
first one: 33 degress
second one: 67 degrees
Step-by-step explanation:
the total measurement for every triangle is 180 so js add up what they give you and subtract it from 180.
hope this helps
Sum of all angles of a triangle = 180
1) 60 + 87 + b = 180
147 + b = 180 {Subtract 140 from both sides}
b = 180 - 147
b = 33
2) b + 83 + 30 = 180
b + 113 = 180 {Subtract 113 from both sides}
b = 180 - 113
b = 67
