Question

classify the triangles below as either right, obtuse or acute triangles. classify every triangle.

Explanation:

Step1: Recall triangle types

• Right triangle: Has one \(90^\circ\) (right) angle.
• Obtuse triangle: Has one angle \(> 90^\circ\) (obtuse).
• Acute triangle: All angles \(< 90^\circ\) (acute).

Step2: Analyze each triangle (from top to bottom on left)

1. Top triangle: One angle appears greater than \(90^\circ\) → Obtuse.
2. Second triangle: All angles look less than \(90^\circ\) → Acute.
3. Third triangle: One angle appears greater than \(90^\circ\) → Obtuse.
4. Bottom triangle: Has a right - angle symbol → Right.

Answer:

• Top triangle: Obtuse
• Second triangle: Acute
• Third triangle: Obtuse
• Bottom triangle: Right