Question

how would the following triangle be classified?
isosceles
isosceles acute
scalene
equilateral

Explanation:

Step1: Recall triangle classification rules

Triangles are classified by side lengths:

• Isosceles: 2 equal sides.
• Scalene: all sides different.
• Equilateral: all 3 sides equal.

Step2: Analyze the given triangle

The triangle has marks indicating all 3 sides are equal. So it is equilateral.
(Note: For it to be isosceles acute, we'd need angle info. Since no angle info is given and side - based classification is possible here, equilateral is the correct answer as it's a more specific classification than isosceles when all sides are equal)

Answer:

equilateral