How do you work out the missing angle?

I have home work which I don’t understand, it about two triangle together how do you work out missing angle

Answer #1

the sum of angles in ANY triangle is 180 so if you have 2 angles and need the third one: add the 2 angles and then subtract their sum from 180..u’ll end up with the third angle!

angle 1+angle 2+angle 3=180

Answer #2

We are going to need a better description than that, and maybe a diagram or something.

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How do you work out the missing angle?

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