Practice30Create account

Sita argues that two triangles are similar because she found AB/DE = BC/EF. Her teacher says this is not enough.
What additional fact would make SAS similarity valid here?

Class 10Criteria for SimilarityGeometry — Similarity
  • Aangle B = angle E (the included angle)
  • Bangle A = angle F
  • CAB = DE
  • DBC = EF

Step-by-Step Solution

For SAS the angle BETWEEN the two proportional sides AB and BC is angle B; it must equal the corresponding included angle E.
Answer: A) angle B = angle E (the included angle)

Master this chapter in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Criteria for Similarity practice questions

More Class 10 Criteria for Similarity practice

A 1.5 m tall girl stands 3 m from a lamp post. Her shadow is 1 m long. Using similar…In triangle ABC, the bisector AD of angle A meets BC at D. A line through D parallel to…Triangle ABC ~ triangle PQR. The ratio of their areas is 9:25. If BC = 12 cm, find QR…Two triangular gardens in Jaipur are similar. The first has sides in ratio 3:4:5 with…In triangle ABC, DE || BC with D on AB and E on AC. If AD = x, DB = x + 2, AE = x - 1…