Question

please solve x in the following question​

Answer 1

Answer:

Step-by-step explanation:

70 + 120 + 90 + y = 360

190 + 90 + y = 360

280 + y = 360

y = 360 - 280

y = 80

x + y = 180

x + 80 = 180

x = 180 - 80 = 100

x = 100

Answer 2

Key points:-

Sum of angles of quadrilateral is equal to 360°

Sum of angles constituting linear pair is equal to 180°

Solution:-

angle CBA = 90°

angle BAD = 180°-x. [linear pair]

angle ADC = 180°-110° = 70°. [linear pair]

angle BCD = 180°-60° = 120°. [linear pair]

Now, 90+180-x+70+120 = 360

or, x = 460-360 = 100°