What shape are the two bike wheels?, triangles, quadrilaterals, circles, O is the middle point of the circle. O is its ____., centre, diameter, edge, OA joins centre O to point A on the circle. OA is a ____., diameter, radius, vertex, BC joins two points on the circle and passes through centre O. BC is a ____., radius, face, diameter, I is the centre of a circle and K is on the circle. IK is its ____., radius, diameter, edge, MN joins two points on a circle through centre P. MN is its ____., radius, diameter, face, A and B are on the circle, and AB passes through centre O. AB is a ____., vertex, diameter, radius, In the circle with centre O, A is on the circle. Complete: OA is a ____., centre, diameter, radius, The bike wheel has a radius of 30 cm. How long is its diameter, in cm?, 60, 61, 59, Complete: diameter = radius ____., + 2, × 2, ÷ 2

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