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Pythagorean Theorem
Take the square root of both sides
Finding the Missing Side Length Given One Side and an Angle
Use the Sine Ratio
Use a calculator to calculate tangent 60
Missing Side Length Example 2
Using the Law of Sines
How to calculate the missing side when the altitude goes to the hypotenuse
How to calculate the missing side length using the Pythagorean Theorem
Conclusion
Introduction to finding the area of a rectangle and parallelogram
Explanation of why the area of a parallelogram is base times height
Introduction to finding the area of a triangle
Demonstration of finding the area of a triangle using a parallelogram
Application of the method to an obtuse triangle
Conclusion and recap of the formulas for finding the area of a rectangle, parallelogram, and triangle