Determine the truth value of the statements:
If three sides of one triangle are equal to three sides of another triangle, then the triangles are congruent. ------ true!
A triangle has three sides and a pentagon has five sides.-----true!
The sum of the angles of a triangle equals 180°, or a right triangle has two right angles. ------true!
If a triangle has at least two sides equal, then it is an isosceles triangle. ------ true!
