Tick marks (shown in orange) indicate sides of a shape that have equal length (sides of a shape that are congruent or that match). The single lines show that the two vertical lines are the same length while the double lines show that the two diagonal lines are the same length. The bottom, horizontal, line in this example is a different length to the other 4 lines and therefore not marked. Tick marks can also be called ‘ hatch marks’.Ī vertex is the point where lines meet (lines are also referred to as rays or edges).
See our page on Angles for more information. The shape illustrated here is an irregular pentagon, a five-sided polygon with different internal angles and line lengths (see our page on Polygons for more about these shapes).ĭegrees ° are a measure of rotation, and define the size of the angle between two sides.Īngles are commonly marked in geometry using a segment of a circle (an arc), unless they are a right angle when they are ‘squared off’. Angle marks are indicated in green in the example here.
Ordering Mathematical Operations - BODMAS.Common Mathematical Symbols and Terminology.Special Numbers and Mathematical Concepts.How Good Are Your Numeracy Skills? Numeracy Quiz.
0 kommentar(er)
