Monday, December 8, 2008

What's Happening in FE8A

Here we come winter.
Another new unit of math. In math we are doing angle proofs, which is made up of of intersecting line rules and parallel line rules. These rules can be used to figure out a whole group of angles when only given.
For intersecting lines the rules are:
complementary
(two or more angles that add up to 90*)
supplementary(two or more angles that add up two 180*)
opposite (two angles that are on the other side of the line are equal)
For the parallel lines rules there are:
F-rule(two angles are equal because the angle on the inside of the arms of the F)
Z-rule( two angles are equal because they are on the inside of the Z)
C-rule(two angles equal 180* because they are located in the inside of the C)

exterior alternate(two angles are equal but only if they are on the out side of the parallel lines)
That concludes the math overview.

Now on to science, in science we have learned about density and how it can be calculated. To do so you will need to know 2 of the 3 properties of one sub stance: Mass, Volume, or Density. to find mass you can use a Triple Beam Balance. To find volume place object in to a container filled to the top with water and the water that spills out is the volume (Thanks to you Archimedes). To find density you use this triangle of usefulness:
The reason there is a X in between the D and the V is because you have to multiply Density by Volume to get Mass. Same thing for the 2 division signs under M because you have to divide Mass by Density or Volume to find Density or Volume.
That concludes my post for today.
See you soon
Eric

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