Did you know that one half turn is 180°? If the straight line or half turn is divided into two angles, and we know one of the angles, we can work out the other. Here 120° + 60° = 180° If we just had ...
Parallel lines are straight lines which have the same direction and so never meet. Arrowheads show lines are parallel. A straight line that cuts a pair of parallel lines is called an intersecting ...
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