Question

triangle b
13
12
14
scalene isosceles equilateral
triandale c

Explanation:

Step1: Recall triangle types

• Scalene: All sides different.
• Isosceles: At least two sides equal.
• Equilateral: All three sides equal.

Step2: Compare Triangle B's sides

Triangle B has sides 12, 13, 14. All are distinct.

Answer:

$\square$ Scalene (checked), $\square$ Isosceles (uncheck), $\square$ Equilateral (uncheck)

(Note: In the original problem's context, we mark the Scalene option as correct since all three side lengths (12, 13, 14) are different, fitting the definition of a scalene triangle.)