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

45° 90° 80°

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

acute obstuse right angle

3.How many sides triangle have?

3 2 1

4.what is the sum of the angles of triangles?

180° 300° 200°

5.If the sum of two angles is 90 degrees , what is the value of third angle?

60° 120° 90°