Write True if the statement is correct and change the underlined word if it is incorrect.

1.Triangle is a "quadrilateral" with three sides and three verticles.

2.A triangle with three congruent sides is called "equiangular triangle".

3."Scalene triangle" is a triangle with two equal sides.

4.An "isosceles triangle" is a triangle having two congruent sides.

5.When all sides of a triangle measure the same,it is called "equilateral triangle".​