Practice Examples (9) - Chapter 3 : Quadrilaterals - CBSE Class 9 Maths
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Practice Questions

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Question 1 Easy

What is the fourth angle of a quadrilateral if the other angles are 110°, 85°, and 95°?

💡 Hint: Use the angle sum property.

Question 2 Easy

If one angle in a rectangle is 60°, what are the other angles?

💡 Hint: Opposite angles in rectangles are equal.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

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

180°
270°
360°

💡 Hint: Think about how many triangles can be formed inside the shape.

Question 2

In a parallelogram, what can be said about the opposite angles?

True
False

💡 Hint: Recall the properties of parallelograms.

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Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A quadrilateral has angles measuring 100°, 60°, and 120°. Prove that it is a concave quadrilateral.

💡 Hint: Check the angle sum property again!

Challenge 2 Hard

Calculate the area of a parallelogram where one side is 10 cm, and the height to that side is 8 cm.

💡 Hint: Make sure you remember the area formula for parallelograms.

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