Download Quadrilaterals What does “quad” mean? Parallel vs. Perpendicular

QUADRILATERALS
What does “quad” mean?
Parallel vs. Perpendicular
Never crosses
Intersects to form a _____
angle
WHAT DO YOU KNOW
ABOUT QUADRILATERALS?
You will need to draw this on your
scratch piece of paper…
■ !. Draw a straight, horizontal line segment.
■ 2. Draw a line that is parallel to your original line segment.
■ 3. Draw a line that crosses the first and second segments (this line will connect your
first and second line segments).
■ 4. Draw another line that crosses your first and second line but not your third line
(you will be connecting the first and second lines on the other side).
Does everyone’s shape look the same?
Why or why not?
All of our quadrilaterals have 4 sides and at
least 1 pair of parallel sides. When a shape
has one or more sets of parallel sides it is
called a TRAPEZOID (some shapes might
also be a more familiar shape, such as a
square or rectangle)
On a scratch piece of paper….
■ 1. Draw a straight, horizontal line segment.
■ 2. Draw a line segment that is parallel to the first line segment.
■ 3. Draw a third segment that crosses both.
■ 4. Draw a fourth line segment that crosses the first two line segments and is parallel
to the third line segment.
If a quadrilateral has TWO PAIRS
of parallel lines, it is called a
PARALLELOGRAM.
On a scratch piece of paper…
■ 1. Draw a straight, horizontal line segment.
■ 2. Draw a line segment parallel to the first line segment.
■ 3. Draw a line segment that is perpendicular to both line segments.
■ 4. Draw another line segment that is perpendicular to both line segments.
A quadrilateral with two sets
of parallel lines AND four
right angles is called a
RECTANGLE.
On your scratch piece of paper…
■ 1. Draw a straight, horizontal line segment that is exactly 4 squares long.
■ 2. Draw a line segment that starts from the end of your line segment and goes
exactly 4 squares down.
■ 3. On the other end of your original line segment draw a line segment that goes
exactly 4 squares down.
■ Connect your second and third lines.
A square is a special
rectangle whose sides
are all the same
lengths.
Quadrilateral- has 4 sides
Trapezoid- 1 pair of parallel sides
Parallelogram- 2 pairs of
parallel sides
Rectangle- 2 pairs
of parallel sides,
4 right angles
Square