20o
40o
90o
140o
Correct answer is B
Exterior angle \(=\frac{360}{n}\) where n = no of sides
\(=\frac{360}{9}=40^{\circ}\)
In the diagram above MN is a chord of a circle KMN centre O and radius 10cm. If < MON = 140&...
Given that = {x: -2 < x \(\leq\) 9}, where x is an integer what is n(T)?...
If the angle of a sector of a circle with radius 10.5 cm is 120°, find the perimeter of the sect...
Simplify \(\frac{1\frac{1}{2}}{2 \div \frac{1}{4} \text{of } 32}\)...