1.What is the third angle for the triangle where angle1 = 45° and angle2 = 45°?

45° 60° 90°

2.If a triangle has an angle of 90 degrees, what is it called?

obtuse acute right angled

3.What is the sum of all the three angles of a triangle?

360° 180° 280°

4.Which of the following triangles have the same side lengths?

scalane isosceles equilateral

5.A triangle in which two sides are equal is called:

isosceles equilateral scalane