In the figure, 0 is the centre of the circle ABC, < CED = 30o, < EDA = 40o. What is the size of < ABC?

KillerBobo15

5 years ago

EOD = 180-30-40 (angles in a triangle sum to 180)

Victorr_r

4 years ago

30+40=70
180-70=110 (sum of angles in a triangle)
180-110=70(angles on a straight line)
180-70=110 (angles on a straight line )
180-110=70 (sum of opposite angles of a quadrilateral are supplementary)

dandano

7 years ago

myschook can you explain this more vivid

BCA34

2 months ago

wetin do ur hand daniel

DanTheMan

9 months ago

Please, Myschool add video explanations to these kind of questions for better understanding. It would help us a lot to understand how it was solved.
Thanks in advance.

Michealubegirl

5 years ago

eod=180-(40+30)=110
110÷2=55
abc=180-55=125