Chapter 9 • Class 8 Mathematics
Triangles
Study by topic — one focused page each
1
Classification of Triangles and Angle Properties
What is a Triangle? A triangle is a closed figure with three sides, three angles, and three vertices. It is the simplest polygon. Classification by Si…
Start this topic → 2Congruence of Triangles
What is Congruence? Two triangles are congruent if they have the same shape and same size. All corresponding sides are equal and all corresponding ang…
Start this topic → 3Medians, Altitudes, and Construction of Triangles
What is a Median? A median of a triangle is a line segment joining a vertex to the midpoint of the opposite side. Every triangle has three medians , a…
Start this topic →Chapter-wide tests
Online Test
10 MCQ • 15 min
IMO / Olympiad Practice
Olympiad level • 15 min
📝 Full Chapter Test (Download & Print)
35 marks • 75 min • with answer key