**1. What are two congruent triangles?**

Congruent triangles are exactly the same shape and size.

**2. Is the smallest angle of a triangle always opposite the shortest side?**

Yes, and the

biggestangle is always opposite thelongestside.

**3. Can a triangle be both ISOSCELES and RIGHT-ANGLED?**

Yes, its angles would be 90

^{o}, 45^{o}and 45^{o}.

**4. Can one of the angles in a triangle be bigger than 180 degrees?**

Yes. The triangle would be an obtuse-angled triangle.