Question

In similar triangles,
1. The corresponding angles are equal.
2. The corresponding sides are always equal.
3. The corresponding sides are always proportional.

• A. Only 1 is true
• B. Only 1 & 3 are true
• C. Only 1 & 2 are true
• D. All are true

Answer 1

The correct option is B

Only 1 & 3 are true

If $\Delta \text{ABC}$ and $\Delta \text{PQR}$ are similar, then $\angle A=\angle P,\angle B=\angle Q$ and $\angle C=\angle R$ and $\frac{PQ}{AB}=\frac{QR}{BC}=\frac{PR}{AC}$ [Since corresponding angles are equal and the ratio of corresponding sides is same]