Perpendicular- lines that intersect at right angles. (90 degrees)
Parallel- lines in the same place that never cross, or intersect.
Intersecting- lines that cross at any angle.
Perpendicular Bisector- a line that divides another line segment in half and has right angles.
Angle Bisector- the line that divides an angle into two equal parts.
Acute Angle- an angle that is less than 90 degrees.
Obtuse Angle- an angle that is greater than 90 degrees and less than 180 degrees.
Right Angle- an angle that is exactly 90 degrees.
Formula Area of Triangle- bxh divided by 2
Formula Area of Parallelogram- bxh
Find the area of the parallelogram
A= 50 x 20
A= 1000 m2
Find the area of the triangle
A= bxh divided by 2
A= 10x12 divided by 2
A= 120 divided by 2
A= 60 m2
Convert fractions, decimals, percents
Fraction out of any whole number
Percent out of 100
Decimal out of 1
Convert 2/5 into % and decimal
Here is a video.
Here is a link about decimals, fractions and percents.