Triangles Mastery

Congruence Rules: SAS, ASA, AAS, SSS, RHS.
Isosceles Properties: Angles opposite equal sides are equal.
Inequalities: Sum of two sides > Third side.

Understanding congruence, properties of triangles, and inequalities.

Q1. In ∆ABC, AB = AC and ∠B = 50°. Find ∠C.

Q2. Can a triangle have sides 3cm, 4cm, and 7cm?

Q3. In ∆PQR, if ∠P = 100°, what is the relation between PQ and QR?

Q4. Which congruence criterion is used if Hypotenuse and one side of a right triangle are equal to another?