Welcome To YOUR CP Geometry Wiki!





LAW OF COSINES

SOLVING A TRIANGLE



Solving a SSA Triangle (from in class)











Finding Areas of Regular Polygons


In the pencasts below, I have illustrated how to find the area of regular polygons when given three different bits of information about the polygon. YES. I expect you to be able to know how to do this without notes or prompting. That is called LEARNING.

As you watch these pencasts, you should stop the pencast as you go through and try to predict what I am going to do next, and you should confirm my calculations.


Finding the Area of a Regular Polygon
with Only the Apothem
Finding the Area of a Regular Polygon
with only the Side Length
Finding the Area of a Regular Polygon
with only the Radius







Finding Areas of Sectors of Circles


Finding the Area of a Sector when given
the Radius and Arc Measure Only
Finding the Area of a Sector When Given
the Radius and Sector Area
Finding the Area of a Circular Segment







Finding the Length of an Arc







How to turn the MIXED FRACTION result on the WEB2.0CALC to an improper fraction.


Remember! This goes back along way (5th grade. Maybe 4th grade). Here is a different example than the one shown in the screencast.