1. If a triangle has angles 125°, 25°, 30°. Is it an obtuse triangle?

2. If a triangle has angles 105°, 35°, 40°. Is it an acute triangle?

3. If a triangle has angles 90°, 60°, 30°. Is it a right angle triangle?

4. A triangle has angles 60°, 60°, 60°. Is it an equilateral triangle?

5. If a triangle has angles 25°, 75°, 80°. Is it an acute triangle?

6. If a triangle has 2 sides with equal lengths and 75° angle between them. What is the type of triangle?

7. If a triangle has 2 angles of 75°. What is the measure of third angle in degree?

8. If a triangle has 2 sides with equal lengths and 60° angle between them. What is the type of triangle?

9. The perimeter of an equilateral triangle is 15cm. What is the length of one side?

10. If a triangle has sides of 2cm, 3cm, 4cm, what is the type of triangle?