Rectangle A rectangle is a quadrilateral in which all the angles are equal and the opposite sides are equal and parallel. A rectangle has two pairs of opposite equal parallel sides, four right angles and two diagonals. Diagonal AC = diagonal BD Diagonal AC = d Applying Pythagoras theorem to the triangle ABD, d2 = l2 + w2 l […]
Tag: Greek Omicron
Volume
Volume Volume is the amount of space in a certain 3D object. For instance, a fish tank has 4 feet in length, 1 foot in width and two feet in height. To find the volume, you multiply length times width times height, which is 4x1x2, which equals eight. So the volume of the fish tank is 8 […]
Horizontal
Horizontal Horizontal is that which is arranged from left to right or vice versa, like a man who sleeps in a horizontal position. Some examples of horizontal things are: The horizon, which is the imaginary line of flight that we see when contemplating a landscape, there at the bottom of everything. A table, which has […]
Grouping
Grouping Grouping means dividing things into equal groups or sets. This picture shows an example: […]
Acute angle
Acute angle An acute angle is an angle that measures less than 90°. […]
