Chapter 8 · Class 9 ICSE · Worksheet

Triangles Worksheet — Class 9 ICSE Maths

Download a free printable worksheet with 30 questions at 3 difficulty levels. Includes full answer key.

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30 questions (Easy + Medium + Hard) with answer key. Fresh set generated daily.

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Sample Questions — Triangles

Here are 8 sample questions from this worksheet. Download the full PDF for all 30 questions.

Q1.What is the sum of all interior angles of a triangle?

A.90°

B.180°

C.270°

D.360°

Difficulty: Easy

Q2.In a triangle, two angles measure 65° and 45°. What is the third angle?

A.60°

B.70°

C.80°

D.75°

Difficulty: Easy

Q3.A triangle with all three sides equal is called:

A.Isosceles triangle

B.Scalene triangle

C.Equilateral triangle

D.Right triangle

Difficulty: Easy

Q4.What is each angle of an equilateral triangle?

A.45°

B.60°

C.90°

D.120°

Difficulty: Easy

Q5.A triangle with one angle equal to 90° is called:

A.Acute triangle

B.Obtuse triangle

C.Right triangle

D.Equilateral triangle

Difficulty: Easy

Q6.In a right triangle, if one acute angle is 35°, what is the other acute angle?

A.45°

B.55°

C.65°

D.75°

Difficulty: Easy

Q7.An isosceles triangle has how many equal sides?

A.0

B.1

C.2

D.3

Difficulty: Easy

Q8.The exterior angle of a triangle is equal to:

A.The sum of all three interior angles

B.The sum of the two non-adjacent interior angles

C.The adjacent interior angle

D.Half the sum of all angles

Difficulty: Easy

Answer Key — Sample Questions+

Q1:180°

Q2:70°

Q3:Equilateral triangle

Q4:60°

Q5:Right triangle

Q6:55°

Q7:2

Q8:The sum of the two non-adjacent interior angles

Download the full PDF for all 30 answers with step-by-step solutions.

About This Worksheet

Topic	Triangles
Board	ICSE
Class	9
Total Questions	30 (10 Easy + 10 Medium + 10 Hard)
Answer Key	Included
Price	Free

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Frequently Asked Questions

Where can I download a free Triangles worksheet for Class 9?+

You can download a free Triangles PDF worksheet for Class 9 ICSE right here on SparkEd. The worksheet includes 30 questions at easy, medium, and hard levels with a complete answer key.

How many questions are in the Triangles worksheet?+

Each SparkEd worksheet for Triangles contains 30 questions — 10 easy, 10 medium, and 10 hard. A fresh set is generated daily so you never repeat the same sheet.

Does the Triangles worksheet include answers?+

Yes. Every SparkEd worksheet comes with a separate answer key so students can self-check their work after completing the sheet.

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