Q1
What are the properties of a parallelogram?
AOpposite sides parallel and equal
BAll sides equal only
CAll angles 90° only
DNo specific properties
ICSEClass 8 (ICSE)MathematicsCh 17 · Topic 1
Special Types of Quadrilaterals
Special quadrilaterals, like parallelograms, rectangles, rhombuses, and squares, have specific properties involving sides, angles, and diago
Core concept
A parallelogram has opposite sides parallel and equal, with opposite angles equal and diagonals bisecting each other.
How it works
A rectangle is a parallelogram with all angles equal to 90°, while a rhombus is a parallelogram with all sides equal.
Why it matters
A square combines properties of both a rectangle and rhombus - all angles are 90° and all sides are equal.
Key detail
Understanding these properties helps us identify, classify, and solve problems involving different types of quadrilaterals.
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Quick notes
• A parallelogram has opposite sides parallel and equal.
• Opposite angles are equal in a parallelogram.
• Diagonals bisect each other in a parallelogram.
• A rectangle has all angles equal to 90°.
• A rhombus has all sides equal.
• A square has all angles 90° and all sides equal.
• These properties help classify quadrilaterals.
• They help solve related geometry problems.