Hg
Name: Class 8 STICK TO WALL IN YOUR STUDY AREA
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The Hg Classes (8
th
to 12
th
) By: Er Hershit Goyal (B.Tech. IIT BHU), 134-SF, Woodstock Floors, Nirvana Country, Sector 50, GURUGRAM +91 9599697178.
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Properties of all types of quadrilaterals (VISUALIZE and REMEMBER):
Shape
Sides
Angles
Diagonals
Rectangle
OPPOSITE sides are EQUAL
& PARALLEL.
ALL angles are equal to 90°.
BOTH diagonals are equal
and BISECT each other.
Square
ALL sides are EQUAL.
OPPOSITE sides are
PARALLEL.
ALL angles are equals to
90°.
BOTH diagonals are
EQUAL, BISECT, &
PERPENDICULAR to each
other.
Parallelogram
OPPOSITE sides are EQUAL
& PARALLEL.
OPPOSITE angles are equal.
ADJACENT angles sum =
180° (as they form co-interior
angles).
The diagonals are NOT
EQUAL, but they BISECT
each other.
Rhombus
ALL sides are EQUAL.
OPPOSITE sides are
PARALLEL.
OPPOSITE angles are equal.
ADJACENT angles sum =
180° (as they form co-
interior angles).
The diagonals are NOT
EQUAL, but they BISECT &
are PEPENDICULAR to
each other.
Trapezium
Only 1 pair of OPPOSITE
sides is PARALLEL.
2 pairs of adjacent angles
are supplementary.
(as they form co-interior
angles).
Nothing special about
diagonals.
Kite
Only 2 pairs of ADJACENT
sides are EQUAL.
One pair of OPPOSITE
angles are EQUAL.
The diagonals are NOT
EQUAL, but they are
PEPENDICULAR to each
other.
Isosceles Trapezium
Only 1 pair of OPPOSITE
sides is PARALLEL.
Other pair of OPPOSITE
sides is EQUAL.
2 pairs of adjacent angles
are supplementary.
Pairs of BASE & TOP angles
are EQUAL.
Diagonals are EQUAL.
