Question

which kind of triangle is shown? equilateral triangle acute triangle obtuse triangle right triangle

Explanation:

Step1: Recall triangle definitions

• Equilateral triangle: all sides and angles equal.
• Acute triangle: all angles less than \(90^{\circ}\).
• Obtuse triangle: one angle greater than \(90^{\circ}\).
• Right triangle: one angle equal to \(90^{\circ}\).

Step2: Analyze the triangle

The shown triangle has one \(90^{\circ}\) angle (by visual inspection of the shape's corner), so it is a right triangle.

Answer:

right triangle