This exploratory activity allows students to choose various lengths of 3 sides of a triangle, form a triangle using the three line segments. Calculations of the square of the longest side is compared with the sum of squares of the remaining two sides.
If they match, then students can verify using a virtual protractor that the triangle is right angled.
See https://www.geogebra.org/m/j7gqtpaw for proof of right angled triangle by converse of Pythagoras Theorem.
