Question Number 100522 by bemath last updated on 27/Jun/20

Answered by bramlex last updated on 27/Jun/20

Commented bybramlex last updated on 27/Jun/20

(1)π−α + π−β + x + y = 2π x+y= α + β (2) α + y + β = 180^o ⇒α+β = 180^o −y then x+y = 180^o −y ⇔ x+2y = 180^o

Commented bybemath last updated on 27/Jun/20

thank you