Question

5) Halla "X" B Y Z X a) 45° b) 90° c) 30° d) 60° e) 80° α В a B A + -C O​

Answer 1

$\alpha + \alpha + \beta + \beta = 180 \\ 2 \alpha + 2 \beta = 180 \\ \alpha + \beta = 90$

$\alpha + \beta = x$

x=90