Friday’s class started with Ms. Saatkamp warning us that in this last quarter there will be some quizzes WITHOUT CALCULATORS, so we better start practicing how to work with square roots and sines, cosines and tangents.
By the way, don’t forget the SOH CAH TOA Table!
After that we went on to the new subject: AREAS of TRIANGLES, RHOMBUS and TRAPEZOIDS.
TRIANGLE ~ To find out the formula for the area of a triangle, you first must remember that a triangle is half of a rectangle; therefore, the area of a triangle will be half of the area of a triangle.
RHOMBUS ~ To find the formula for the area of a rhombus, you have to keep in mind that a rhombus is also like two triangles; therefore, it is by adding both triangles areas that we will come up with the rhombus area.
Purple triangle & Black triangle
In order to find the area of each triangle,
you must use the following formulas:
TRAPEZOID ~ To find the area of a trapezoid you must also remember that it is like finding the area of two triangles.
The formulas are the following:
The homework for Monday is: Page 539, # 11 - 26 all!
Don't forget that also on Monday there is going to be a RECUPERATION TEST on CHAPTER 9!
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