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The Triangle and Its
8 Properties

Learning Objectives

After studying this chapter, students will be able to... Scan to learn
 classify triangles based on the length of their sides and the measures of their angles

 identify and differentiate between the median and altitude of a triangle
 understand the exterior angle of a triangle, angle sum property of a triangle and their properties
 understand and apply the inequality properties of a triangle related to the sum of the lengths of two sides
 verify and apply the Pythagoras theorem to the right-angled triangles in real-life scenarios

 identify Pythagorean Triplets and use them to solve problems involving right-angled triangles
 understand the concept of congruency and apply the criteria to prove the congruence of triangles

GET READY!

Rohan went to the morning walk with his father near a river and saw a bridge that was under construction.

Yes, this is called a truss bridge.
Triangular shapes are used for good
support and distributes the weights
evenly without disturbing the structure.

Can you classify
the triangles on the
Papa! Look at this basis of their sides
bridge, it is composed and their angles?
of a series of triangles.

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