Work out which aircraft are in danger of colliding from their positions and direction of travel. An exercise in understanding bearings.
Estimate the sizes of each of the angles then add your estimates together.
An exercise in estimating what the sectors of a pie chart represent.
Work out which sectors fit together to make complete circles. Knowledge of the sum of the angles at a point will help find more than one correct solution to this puzzle.
Find a trapezium, a triangle and a quadrilateral where all of the angles are square numbers.
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