1. What is the third angle for the triangle where angle1 = 45° and angle2 = 45°?
2. If a triangle has an angle of 90 degrees, what is it called?
3. Which of the following triangles have the same side lengths?
4. Area of an equilateral triangle with side length a is equal to:
5. The height of an equilateral triangle of side 5 cm is: