12. Which one below refers to a triangle with three congruent sides? A. Equiangular triangle
B. Equilateral triangle
C. Isosceles triangle
D. Scalene triangle

13. What is the measure of the third angle of a triangle if the measures of the two angles are 36° and 70°?
A. 37
B. 449
C. 749
D. 87°

14. What are the measures of the other two angles in an isosceles triangle if one base angle measures 50%
A. 30° and 100°
B. 40° and 90°
C. 50° and 80°
D. 60° and 70°

15. What do you call a triangle with at least two congruent sides?
A. Equiangular triangle
B. Equilateral triangle
C. Isosceles triangle
D. Scalene triangle​