Question

for each triangle, check all that apply.
triangle a
triangle b
triangle c
□scalene
□isosceles
□equilateral
□scalene
□isosceles
□equilateral
□scalene
□isosceles
□equilateral

Explanation:

Step1: Classify Triangle A

Sides: 6, 5, 6. Two equal sides, so it is isosceles.

Step2: Classify Triangle B

Sides: 19, 19, 19. All equal sides, so it is equilateral (and equilateral triangles are a subset of isosceles, but equilateral is the most specific classification here).

Step3: Classify Triangle C

Sides: 5, 8, 11. All sides unequal, so it is scalene.

Answer:

• Triangle A: Isosceles
• Triangle B: Equilateral, Isosceles
• Triangle C: Scalene