Question

calcule o valor de x no quadrilatero

Answer 1

a ) -  

50 + 70 + x + x + 20 = 360

140+2x = 360

2x =  220

x = 110

-------------- > x = 110

b ) -  

x + x + 30 + 2x + 10 + 2x - 10= 360

6x = 330

x = 55

---------------- > x = 55

Answer 2

a)

X + X + 20 + 50 + 70 = 360

2X = 360 - 140

X = 110

b)

2X + 10 + 2X - 10 + X + X + 30 = 360

6X = 360 - 30

X = 55