In the circle below, angle JIL = 228 and angle IJK = 131. Find the following.
(a) angle JIL
(b) angle ILK
angle JIL encompasses the rest of the circle arc 360 - 228 = 132
the angle inscribed on the circle encompasses 2 times as much arc angle JIL = 66o
Angle IJK and angle and angle ILK are supplementary (opposite angles inscrided quadrilateral = 180)
180 - 131 = 49o = angle ILK