WAEC - Mathematics (1989 - No. 31)
In the diagram above, what is the size of angle ACB?
40o
50o
60o
80o
100o
説明
< ABC = 80° (alternate angles)
< ACB = 180° - (80° + 40°) = 60°
In the diagram above, what is the size of angle ACB?
< ABC = 80° (alternate angles)
< ACB = 180° - (80° + 40°) = 60°