1. Welcome to RSP Math
Mrs.Muljodiredjo

2. Objective:
Student will be able to use formula routinely for finding the perimeter and area of basic two-dimensional figures including rectangles, parallelograms, trapezoids, squares, triangles, circles.

3. TWO DIMENSIONAL FIGURES
PARALLELOGRAM
RECTANGLE
SQUARE
TRIANGLE
TRAPEZOID
CIRCLE

4. Definitions: Rectangle is a parallelogram with four right angles.
Parralelogram is a four sided shape with two pairs of parallel sides.
Trapezoid is a quadrilateral with one pair of parallel sides.

5. AREAS of PARALLELOGRAM = base x height (b x h)
A Parallelogram is a quadrilateral with two pairs of parallel sides
height
height
height
base
base
base
SQUARES and RECTANGLES ARE PARALLELOGRAMS

6. Area and Perimeter:
Area is the number of squares inside the shape. To find the area of the shapes, use the formulas for each shape.
Perimeter is the distance around the shapes. To find the perimeter of the shapes, add all sides.

7. AREA of TRAPEZOID: ½(b1 +b2)h AREA of TRIANGLE: base x height = bh 2 2 b1

8. AREA OF A CIRCLE 2 AREA = πr CIRCUMFERENCE = 2 π r OR π d D = diameter
R = radius
D = 2 r
π = 3.14 d I
ame t er
radius 2
AREA = πr
CIRCUMFERENCE =
2 π r OR
π d

9. Definitions:
Circumference is the distance around the circle. It is another word for perimeter.
Area is the number of squares inside the circle.