Saturday, March 17, 2012

how do we find the area of parallelograms,kites, and trapezoids ?

the area o a parallelogram is BxH just like the rectangle


the area of a trapezoid is (b1+b2/2)H. 


the area of a kite is d1,d2/2


just plug the numbers as seen on the formula.

how do we calculate the area of rectangles and triangles?

the area of a rectangle is BxH
for example-if the base was 3 and the height was 4, the area would be 12


the area for a triangle is 1/2BxH
for example- if the base was 2 and the height was 7, both the base and the height will equal to 14 . hal of 14 is 7 so thats the area.

Tuesday, March 13, 2012

How do we use the other definitions of transformationhow do we solve logic problems using conditional ?

Glide reflection-the combination of a reflection in a line and a translation among that line 


Orientation-refers to the arrangement of points, relative to one another, after a transformation has occurred


Isometry-is a transformation of the plane that preserves length.


Direct isometry- both the length (the orientation) is the same. 


Opposite isometry- changes the order 


Invarianti- figure or property that remains unchanged under transformation of the plane is referred to as invariant no variations have occurred. 

how do we solve logic problems using conditional ?

conditional- if 2 angles are congruent , then the 2 ares are not right angles.

how do we find the locus of points?


how do we calculate the area of a rectangle and triangle?



Sunday, March 4, 2012

What is logic?

Logic is used to decided whether the statement is true of false


Example:

What is a mathematical statement?

A mathematical statement is a statement that can state without or not its true or false


For example:
1. 5 is more than 3
    This statement is true because 5 is bigger than 3


2. Is a square a rhombus?
    this is not a mathematical statement, its just a question