#### Transcript Quadrilaterals - CPS Innovation 3 2011

```Done By;
Lim Ren Yong, Jewels
I-3
means "four
four, lateral means
side).
Any four-sided
shape is a
But the sides have
to be straight, and
it has to be 2dimensional.
~Properties~
• Four sides (or edges)
• Four vertex (or corners).
• The interior angles add up to 360 degrees
• All angles should add up to 360 degrees
There are special types • Some types are
also included in
the definition of
-Square
-Kite
other types. For
-Parallelogram
example a square,
-Rectangle
rhombus and
-Rhombus
rectangle are also
parallelograms
-Trapezium
Rectangles
-The square represents
the right angle
-The lines shows the equal
sides of the rectangle
• A rectangle is a
four-sided shape
where every
angle is a right
angle (90°).
• Also opposite
sides are parallel
and of equal
length.
• A Rhombus is a
four-sided shape
where all sides have • Another interesting
equal length.
thing is that the
• Also opposite sides
diagonals (dashed lines
are parallel and
in
second
figure)
of
a
opposite angles are
rhombus bisect each
equal.
other at right angles.
Square
-The small square
represents the right
angle
-The lines shows the
equal sides of the
rectangle
• A square has equal
sides and every angle
is a right angle (90°)
• Also opposite sides are
parallel.
• A square also fits the
definition of a
rectangle (all angles
are 90°), and a
rhombus (all sides are
equal length).
Parallelogram
NOTE: Squares, Rectangles and
Rhombuses are all Parallelograms!
• Opposite sides are
parallel and equal
in length, and
opposite angles
are equal (angles
"a" are the same,
and angles "b" are
the same)
Example;
A parallelogram
with:
-All sides equal
-Angles "a" and "b" as
right angles is a
square
-It is called an
Isosceles
trapezium if the
sides that aren't
parallel are
equal in length
and both angles
coming from a
parallel side are
equal, as shown.
• A trapezium
has one pair of
opposite sides
parallel.
• The small square
represents the right
angle
• The lines shows the
equal sides of the kite
The kite has two pairs of