Unlike traditional desktop calculator, SpeedCrunch is easier to use. You just type the expression that you want to calculate and press Enter. You can also paste the expression from the clipboard, that you copied from somewhere else.
A rhombus is a four-sided shape where all sides have equal length. Opposite sides are parallel and opposite angles are equal. Also the diagonals (dashed lines in the figure) of a rhombus bisect each other at right angles.
The right triangle has one 90 degree angle and two acute . . . (< 90 degree) angles. The sum of the angles of a triangle is always 180 degrees. The two sides of the triangle that are by the right angle are called the legs... and the side opposite of the right angle is called the hypotenuse.
Side b = base; Side a = height
In the equilateral triangle, all the sides are the same length (congruent) and all the angles are the same size (congruent).
The isosceles triangle has two sides that are the same length (congruent) and two angles that are the same size (congruent).
Kite Information and Reference
In geometry (a quadrilateral is a polygon with four sides (or 'edges') and four vertices or corners). A kite is a quadrilateral with two pairs of adjacent, congruent sides.
To find the area of a kite, multiply the lengths of the two diagonals and divide by 2. To find the perimeter of a kite, just add half the lengths of the sides and multiply by 2.
A circle - A plane curve everywhere equidistant from a given fixed point, the center.
In Speed Crunch Beside standard algebraic operator like + (addition), - (subtraction), * (multiplication), / (division), ^ or ** (exponentiation), there is support for some functions, for example sin, log, abs, and many more. You do not need to memorize function names, use Ctrl+F to pop up a dialog where you can choose the function that you need (more than 50 built-in math functions).
Polygon Information and Reference
Using an Octagon as example:
Polygon area formula:
A= (S ² * N)/(4 * tan (π/N))
S= side length
N= number of sides
In Speed Crunch If you want to recall again the expression which you typed before, then press up and down arrow to access the expression history. Moreover, your expression history (maximum last 100 expressions) is saved between sessions. This means you can still invoke those calculations you have done yesterday or last week.
Contents: Addition; Subtraction; The use of Double Signs and Brackets; Multiplication; Division; Simple Equations; The Lowest Common Multiple; Fractions; Quadratic Equations; Simultaneous Equations; Exponential Notation.
For a generation this was the leading textbook on the subject of plane geometry in America. Topics covered: rectilinear figures, the circle, proportion, similar polygons, areas of polygons, regular polygons and circles, etc.