Question

What is the value of a + b?

145

135

110

125

Answer 1

a° = 1/2 (90) = 45°

b° = 1/2[360 - (110 + 90)]
b° = 1/2(160)
b° = 80°

a°  + b° = 45° + 80° = 135°

Answer
135°

Answer 2

a° = 1/2 (90) = 45°

b° = 1/2[360 - (110 + 90)]

b° = 1/2(160)

b° = 80°

a°  + b° = 45° + 80° = 135°

Answer

135°