Question

classify each triangle by its angles and sides. equal sides and equal angles, if any, are indicated in each diagram.
5)
6)

Explanation:

Step1: Analyze triangle 5

• By sides: Two sides are equal (marked with the same tick), so it is an isosceles triangle.
• By angles: One angle is greater than \(90^{\circ}\) (obtuse), so it is an obtuse triangle.

Step2: Analyze triangle 6

• By sides: All sides are of different lengths (no tick marks indicating equality), so it is a scalene triangle.
• By angles: All angles are less than \(90^{\circ}\) (acute), so it is an acute triangle.

Answer:

1. Isosceles - obtuse triangle
2. Scalene - acute triangle