Question

Find the missing angle. 20° 135° ?​

Answer 1

The missing angle would be 25°.

Step-by-step explanation:

135° + 20° = 155°

Since the angles must have a sum of 180°, we subtract 155° from 180°, which would equal 25°.

To confirm: 135° + 20° + 25° = 180°

Answer 2

25

Step-by-step explanation:

all three angles of a triangle equal to 180º. 135+20=155

180-155=25

this is how u get ur answer