Question

Find the unknown angle markes as 'x' o in the centre​

Answer 1

Answer:

40 degrees

Step-by-step explanation:

see... every and every single angle formed in a semicircle is always 90 degree ..................... by semicircle theorem

so according to the given condition

we get,

x+ 90+ 50= 180   ................. measure of a triangle

x+140=180

x=180-140

x=40 degree