Question

for each triangle, check all that apply.
triangle a
triangle b
triangle c

Explanation:

Step1: Recall triangle classification rules

• Equilateral triangle: All three sides are equal.
• Isosceles triangle: At least two sides are equal.
• Scalene triangle: All three sides are of different lengths.

Step2: Analyze Triangle A

The side lengths are \(4\), \(5\), and \(6\). Since \(4
eq5
eq6\), all sides are different.

Step3: Analyze Triangle B

The side lengths are \(7\), \(7\), and \(11\). Since two sides (\(7\) and \(7\)) are equal.

Step4: Analyze Triangle C

The side lengths are \(13\), \(13\), and \(13\). Since all three sides are equal.

Answer:

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