Attempt the question, check the explanation, and continue with similar questions to build confidence before exams.
A triangle with sides 3 cm, 3 cm, 3 cm
A triangle with sides 4 cm, 4 cm, 2 cm
A triangle with sides 5 cm, 5 cm, 5 cm
A triangle with sides 6 cm, 6 cm, 6 cm
Continue with nearby questions to strengthen the same chapter concept while you still have the context fresh in mind.