Wednesday, November 26, 2008

November 27, 2008

Today's class, Mr.Kuropatwa put up 2 questions on the board to start off the class.

A. Find the surface area of a prism.

To find the surface area of a prism you have to find the congruent faces. Opposites that have the same area. Find the area of 2 sides (L*w), adjacent sides (w*h), then the two ends (l*w). Then add the total areas. Therefore the answer for the question should be:

SA = 2(2x3) +2 (5x2) +2 (3+5) = 62units²

B. If we triple all the dimensions, what will the new surface area be...Use the pattern we learned yesterday. Although I forgot what the pattern we learned from yesterday, I should of asked again. Answer for the question is:

9x62 = 558

Later on in the class, Mr.K put us into groups to work on a sheet on Quadrilateral. We had to identify figures of shapes with the proper names, examine each figure and identify properties it has in a chart.

The properties on the chart : Opposite side are equal, all sides are equal, opposite angle are right angles, consecutive angles are supplementary. diagonals are congruent, diagonals bisect each other, diagonals bisect opposite angles, diagonals are perpendicular to each other.

The word supplementary means is 2 angles that add up to 180 degrees.
The word congruent means is having the exact equal size and shape.
The word bisect means cutting into 2 congruent in halves.

Mr.K talked a little bit about Convex and Concave but we will be learning more about Convex. He also talked about the Trapezoid being a special quadrilateral ; 2 sides 1 pair parallel (//) *Remember the symbol for parallel* A Parallelogram ; 2 pairs opposite sides parallel. For a rectangle, all sides are congruent. Why? Because all sides are equal to 90 degrees.

Hopefully I covered most of today's scribe. Please bear with me though I'm not good at explaining everything. I tried my best! If you did not understand anything .. PLEASE ask questions in class; it will help you and everyone. :)

TOMORROW'S SCRIBE WILL BE ! ... i-i-i-i-i-i-i-i-i-i.. icon !

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