Question

find the unknown angles for each of the given triangles ​

Answer 1

Answer:

1)let angle D be x

50+40+x= 180

90+x= 180

x=180-90

x= 90

Answer 2

Step-by-step explanation:

b) let b and c = x

50+x+x = 180°

50+2x = 180°

2x = 180°-50°

2x = 130°

x = 130/2

65°