Question

solve 1st part of the question.....​

Answer 1

ᾰṧ-ṧᾰℓᾰՊ ᾰℓ!кṳպ!!

✍️ OC is perpendicular to OF

OC bisects angle AOD

= DOE = EOB = x°

= AOC = DOC = y°

y+y + x+x = 180

2(x+y) = 180

x+y = 90°

Answer 2

OC perpendicular OE

then COE = 90°

then EOB is 30°

and AOC is 60°

then AOB = 180°

then AOB is a straight line