Question

classify the triangle by its sides. scalene isosceles equilateral classify the triangle by measuring its angles. acute right

Explanation:

• By sides: In a triangle, if two sides are equal, it is isosceles. Here, two sides are marked as equal (the red - marked sides).
• By angles: An acute triangle has all angles less than \(90^{\circ}\). Since there is no right - angle (\(90^{\circ}\)) or obtuse - angle (greater than \(90^{\circ}\)) indication, and it is a regular - looking triangle (in the context of the problem), we assume all angles are acute.

Answer:

• By sides: Isosceles
• By angles: Acute