Chapter 9 • Class 4 Mathematics
Lines and Angles
Study by topic — one focused page each
1
Types of Lines
In geometry, a line is a straight path. In Grade 4, we study three important relationships between lines: Parallel Lines: Lines that never meet and ar…
Start this topic → 2Types of Angles
An angle is formed when two rays meet at a common point called the vertex . Angles are measured in degrees (°) . Three main types of angles: Acute Ang…
Start this topic → 3Using a Protractor to Measure Angles
A protractor is the tool used to measure angles in degrees. Steps to measure an angle with a protractor: Place the centre hole of the protractor at th…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 12 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key