Answer:
24 degrees, so D
Step-by-step explanation:
The total angle of a triangle is 180 degrees.
(quadrilateral is 360 degrees)
So, the question tells you two angles which are,
66 and 90 degrees
To find out the third angle, you have to add the two degrees, so
156, which means,
156 + x = 180
To solve the equation, it is,
24.
Hope it helps!!!
Let me know if I got it wrong or you need help on a different problem!!
