Click icon to add picture2 D AND 3 D SHAPES &

FORMULAS

MYP 2 E.O.G. Prep

Click icon to add pictureTHIS TIM

E IS TO

BE TAKEN

SERIOUSLY.

Attendan

ce to Finally

Friday is

particall

y dependenr o

n your behavior

and work in

the AE class

in th

e afte

rnoon.

2 D AND 3 D SHAPES & FORMULAS

2 D AND 3 D SHAPES & FORMULAS

Click on the link.

Area and Perimeter of a Triangle

2 D AND 3 D SHAPES & FORMULAS

CLICK ON THIS LINKHTTP://WWW.YOUTUBE.COM/WATCH?V=Y_-CONZMITO

Squares and rectangles

Perimeter is the distance around a figure. For a rectangle or square, we can find the perimeter using two procedures:

Using addition: (l + l) + (w + w). Add the length and its opposite side. Add the width to its opposite. Find the sum of the lengths and widths. For a square use (s+s+s+s) .

Using multiplication: (l x 2) + (w x 2). Multiply the length by 2. Multiply the width by 2. Find the sum of the products. For a square use 4 s because all the sides are congruent.

Area is the number of square units inside a retangle or square. Area is found by multiplying the length by the width or side by side in the case of a square.

A = l x w A = s x s

2 D AND 3 D SHAPES & FORMULASA trapezoid is a 4-sided flat shape with straight sides that has a pair of opposite sides

parallel.

The Perimeter is the sum of all side lengths:

Perimeter = a+b+c+dhttp://www.youtube.com/watch?v=GfgwHpt-gG4

Click on this link

2 D SHAPES AND FORMULASCLICK ON THIS LINK

HTTP://WWW.YOUTUBE.COM/WATCH?V=-BL3FLZBIFEPerimeter of a TrapezoidThe Perimeter is the distance around the edges.

Example: A trapezoid has side length of 5 cm, 12 cm, 4 cm and 15 cm, what is its Perimeter?Perimeter = 5 cm + 12 cm + 4 cm + 15 cm = 36 cm

Area of a Trapezoid

The Area is the average of the two base lengths times the altitudeA = (a + b) X h

2

2 D AND 3 D SHAPES & FORMULAS

2 D AND 3 D SHAPES & FORMULAS

2 D AND 3 D SHAPES & FORMULAS

C I R C U M F E R E N C E

The circumference of a circle is the distance around the outside of the circle. It could be called the perimeter of the circle.

How to find the circumference of a circle: The circumference of a circle can be found by

multiplying pi ( π = 3.14 ) by the diameter of the circle.

If you know the radius, the diameter is twice as large.

2 D AND 3 D SHAPES & FORMULAShttp://www.youtube.com/watch?v=fasm79parv4Click on this link.

2 D AND 3 D SHAPES & FORMULAS

http://www.youtube.com/watch?v=dDl7p4fjGQI Click on this link

http:/

/www.yo

utube

.com/w

atch?

v=YjG

VFPtNTH

w C

lick o

n this

link

2 D and 3 D Shapes & Formulas

2 D and 3 D Shapes & Formulas

Surface area of a rectangular prism

http://www.youtube.com/watch?v=agIV623B3nc Click on this surface area link

http://www.youtube.com/watch?v=E8tuMaDxgJM Click on this link

Volume of a rectangular prism

2 D AND 3 D SHAPES & FORMULAS

http://www.youtube.com/watch?v=Aigefhb-1NM&NR=1&feature=endscreen Click on this surface area part1link

http://www.youtube.com/watch?annotation_id=annotation_12335&feature=iv&src_vid=Aigefhb-1NM&v=T6VxjB7bS5o Click on this surface area part 2 link

http://www.youtube.com/watch?v=8QDmHVEcSfk Click on this volume link

2 D and 3 D Shapes & Formulas

2 D AND 3 D SHAPES & FORMULAS