intersecting lines, two or more lines that cross each other, vertical, upright/ perpendicular to horizontal, horizontal, side to side/ perpendicular to vertical, oblique line, a straight line that is not horizontal or vertical, rotation, is the circular movement of an object around a central axis, clockwise, in the same direction as the way in which the hands of a clock move round., anticlockwise, in the opposite direction to the way in which the hands of a clock move round., protractor, instrument for measuring angles

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