Question

determine as medidas a , b x em grau na figura sendo r // s

Answer 1

$a = 180 -2x -10$

$b = 180 -2x +10$

$180 -2x -10 +180 -2x +10 +x = 180$

$-3x = -180$

$x = 60$

$a = 180 -2*60 -10$

$a = 180 -130$

$a = 50$

$b + 50 + 60 = 180$

$b = 180 -110$

$b = 70$

Answer 2

2x+10°+2x-10°+180°-x=360° 4x-x=360°-180° 3x=180° x=60° 2x+10+a=180° 2.60°+10°+a=180° 130°+a=180° a=50° b=70°