Practice Theorems (4.1) - Chapter 3 : Quadrilaterals - CBSE Class 9 Maths
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Theorems

Practice - Theorems

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Practice Questions

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Question 1 Easy

What is the sum of the interior angles of a quadrilateral?

💡 Hint: Think about how many triangles can be formed from a quadrilateral.

Question 2 Easy

If one angle of a parallelogram is 70 degrees, what are the other three angles?

💡 Hint: Remember opposite angles are equal.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

In a parallelogram, are opposite sides equal?

True
False

💡 Hint: Think about the definition of a parallelogram.

Question 2

The diagonals of a parallelogram intersect at their midpoints.

True
False

💡 Hint: Remember what happens when you draw diagonals in parallelograms.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

Given a quadrilateral with sides of lengths 5 cm, 7 cm, 5 cm, and 7 cm, prove if it's a parallelogram.

💡 Hint: Identify the properties of sides.

Challenge 2 Hard

In a parallelogram, if one angle is 60°, calculate the measures of all angles.

💡 Hint: Use the property of supplementary adjacent angles.

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