X=53+44+46? Is this right or no?

X= 143°

Step-by-step explanation:

You could do it your way or as you can see, there's a right angle, which equals 90°, so you could either add 44+46+53 or 90+53. You get the same answer, which is 143°.

Step-by-step explanation:

53°+44°+46°+x=360°(complete circle)

or,143°+x=360°

or,x=360°-143°

or,x=217°

hope this helps you.

12

step-by-step explanation:

a triangle's   full angle is 180 degrees so 180 - 156 = 24. 24/2=12