Page 1 - Activity

SAI International School
CLASS - X

Mathematics
CHAPTER-1: Triangles-4

Activity-4
Pythagoras Theorem

Objective
To verify Pythagoras theorem by performing an activity.
The area of the square constructed on the hypotenuse of a right-angled triangle is
equal to the sum of the areas of squares constructed on the other two sides of a
right-angled triangle.

Prerequisite Knowledge

1. In a right-angled triangle the square of hypotenuse is equal to the sum of squares on the
other two sides.
2. Concept of a right-angled triangle.
3. Area of square = (side)
2
4. Construction of perpendicular lines.

Materials Required
Coloured papers, pair of scissors, fevicol, geometry box, sketch pens, light coloured
square sheet.

Procedure

1. Take a coloured paper, draw and cut a right-angled triangle ACB right-angled at
C, of sides 3 cm, 4 cm and 5 cm as shown in fig. (i).

2. Paste this triangle on white sheet of paper.