The attributes of a 2D shape are its size or shape. ExampleĪ rectangular diagram divided into rows (horizontal) and columns (vertical). The area of this rectangle is 2 × 4 = 8 square units. The amount of surface inside a closed flat (2D) shape. The highest point or vertex in a plane shape, polyhedron or geometric solid. The measure of turn between two straight lines that meet.Ī protractor is used to measure an angle. ExamplesĪ clock with a face and two rotating hands – the minute hand (long) and the hour hand (short) – also sometimes another hand for seconds. If the two lines are parallel, the alternate angles are equal. When two lines are cut by a third line (transversal) alternate angles are between the pair of lines on the outside of the transversal. ExampleĪ step-by-step method for solving problems in mathematics. Two lines, or sides that share a common point (vertex).Ī strand of mathematics that substitutes symbols or letters for unknown numbers.
#PARALLEL LINES IN MATH ILLUSTRATIONS PLUS#
The process of combining collections of objects into a larger collection.Īdd, addition, plus and sum are related terms. Add, addition, plus and sum are related terms.Ĭombining a collection of things together:.The process of combining collections of objects into a larger collection.
The red lines illustrate some angles that are acute (less than 90 degrees).Ī triangle with all interior angles less than 90 degrees. The accuracy of the measurement depends on the quality of the instrument being used and the person measuring.
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