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Angle Bisector Theorem


Geometry 
The angle bisector theorem is concerned with the relative lengths of the two segments that a triangle's side is divided into by a line that bisects the opposite angle. 


Box Rotation around a Point


Geometry 
Graph demonstrates how to rotate a box around a point using trigonometry. 


Building Equations from Rectangles


Equations 
PreAlgebra: Build equations by turning on width or height and area. Or build equations by turning on width or height and perimeter.
Algebra 1: Build and solve a quadratic equation by turning on area and perimeter. 


Calculating Correlation Coefficient


Statistics 
Graph helps visualize the correlation coefficient relationship between two variables. 


Calculating Pi with Calculus


Calculus 
Pi may be calculated by finding the area under a halfcircle, then solving for pi using the area of a circle. 


Calculating Pi with Perimeter


Number Theory 
π may be calculated by inscribing a regular polygon into a circle. By measuring perimeter, π may be estimated. 


Calculating Sample Variance and Standard Deviation


Statistics 
Variance measures how far a set of numbers is spread out from their average value. This model represents the calculation of sample variance. 


CAMPARING EXPRESSIONS AND EQUAIONS


Geometry 
What is a numerical expression? A numerical expression is (7+9) *5. The difference between expressions and equations is that expressions only have the numbers and equations answer the expressions. for example: (7+9) *5  expression (7+9) *5= 80  equation. Even though they are different they are also the have some similarity they both have operations, variables, and numbers (obvious). 


Circumcenter Theorem


Geometry 
Any point on the perpendicular bisector of a segment is equidistant from the endpoints of the segment. 


Color Theory (CMYK)


Geometry 
Any color you see on a surface is formed by the subtractive color mixing model. We are more familiar with this color model because it is how we learned to mix colors. In this case, “subtractive” refers to removing the light from the paper by adding more color. "K" represents blacK which is added in the printing process to make the colors more realistic. 

