Answer:
a. Right triangle
b. Isosceles
c. Equilateral
d. Scalene
Step-by-step explanation:
a. ∆ABE has a right angle and 3 unequal sides, so therefore it can be classified as a right triangle.
b. In ∆BEC, side BE = 7
Side CE = FE + FC = 5 + 2 = 7
This means that ∆BEC has tow equal sides. Therefore, ∆BEC is classified as an isosceles triangle.
c. ∆DEF has 3 equal sides. Therefore it is classified as an equilateral triangle.
d. ∆CDF has 3 unequal sides. Therefore, it is a scalene triangle.
