A triangle can have two right angles.

All the three angles of a triangle can be less than $60°$.

 All the angles of a triangle can be greater than $60°$.

Each angle of a triangle can be equal to $60°.$

A triangle can have two obtuse angles.

State True or False:

A triangle can have at most one obtuse angle.

State true or false:

If one angle of a triangle is obtuse, then it cannot be a right-angled triangle.

Is the following statement true (T) or false (F):

 An exterior angle of a triangle is less than either of its interior opposite angles.
 

Is the following statement true (T) or false (F):

 An exterior angle of a triangle is equal to the sum of the two interior opposite angles.