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Transcript
ONE WITH NATURE……..
AND QUADRILATERALS
The Quads Maaaan…
A quadrilateral is a four sided
polygon where the four coplanar
line segments are put end to
end to create a four-sided
closed figure…maaan.
Parallelograms
• A parrallelogram is formed by two sets of parallel
lines, and the opposite sides of are always the same
length.
• The diagnals bisect each other.
• A parralellogram’s opposite angles are always
congruent, and consecutive angles are always
supplementary.
• If a parallelogram has an angle measuring 90
degrees, then all the other angles must also be 90
degrees.
Make Rhombi, Not War
Peace, Love, Rectangles
• A four-sided polygon with all
angles measuring 90 degrees.
• A rectangle’s opposite sides are
both parallel and congruent.
• The diagnels are congruent and
bisect each other.
Be One With the Squaaare
A square is a four-sided
parallelogram where all four
angles are congruent and
measure 90 degrees.
Trapezoid
• A trapezoid si a parallelogram with two bases
and at least one pair of paralel sides.
• A close cousin to the trapezoid, the trapezium,
has no parallel sides, and is the definition of a
trapezoid in the UK.
Isosceles Trapezoid
• The bases of an isosceles trapezoid are
parallel, the opposite angles are congruent
and its opposite sides are exactly the same
length. If you fold an isosceles trapezoid over
itself, it lines up perfectly, so each set of base
angles are congruent to each other.
Flyin’ High as a Kite
• A kite’s diagnals intersect at a right angle.
They have two sets of adjacent angles, and
only one set of congruent angles. The long
diagnal bisects the short diagnal to form four
right angles.