Triangles
Congruence, similarity, basic proportionality theorem and Pythagoras theorem.
Test yourself on Triangles
5 practice questions for NSEJS with instant answers — no signup, ~3 minutes.
Study notes are still being prepared.
Don't wait — Shishya can teach you this topic right now, on demand.
Ask Shishya to teach this →Need more? Ask Shishya
Shishya is your personal tutor for this topic. Pick a starter or open a free chat.
- Go deeper on this topicGo deeper on Triangles for NSEJS — examples and edge cases I should know.
- Show me exam shortcutsGive me 3 fastest shortcuts to solve Triangles questions in the exam.
- What mistakes should I avoid?What are the most common mistakes students make on Triangles? How do I avoid them?
- Quiz me adaptivelyQuiz me on Triangles — start with one easy question, then go harder based on how I answer.
Practice this topic
Take a full mock →Q1 · Triangles · MEDIUM
In triangle ABC, if AB = 8 cm, BC = 15 cm, and AC = 17 cm, what type of triangle is ABC?
Q2 · Triangles · MEDIUM
Two triangles ABC and DEF are similar. If AB = 6 cm, DE = 9 cm, and the area of triangle ABC is 24 sq cm, what is the area of triangle DEF?
Q3 · Triangles · EASY
In a right-angled triangle, the two legs are 5 cm and 12 cm. What is the length of the hypotenuse?
Q4 · Triangles · MEDIUM
In triangle ABC, angle B = 90°. If AB = 6 cm and BC = 8 cm, a point D lies on AC such that BD is perpendicular to AC. What is the length of BD?
Q5 · Triangles · MEDIUM
In triangle ABC, D and E are points on sides AB and AC respectively such that DE is parallel to BC. If AD = 3 cm, DB = 5 cm, and AE = 4.5 cm, what is the length of EC?