1. What is the third angle for the triangle where angle1=45° and angle2=70°?
2. If a triangle has an angle of 90 degrees, what is it called?
3. If a triangle has 2 sides with equal lengths and 75° angle between them. What is the type of triangle?
4. If all three angles are exactly the same measure, how big is each angle? (Hint: x + x + x = 180°)
5. If a triangle has sides of 2cm, 3cm, 4cm, what is the type of triangle?
6. If a triangle has angles 25°, 75°, 80°. Is it an acute angled triangle?
7. What is the value of each angle of an equilateral traiangle?
8. If a triangle has angles 45°, 45°, 90°. Is it an obtuse angled triangle?