Do these sides create a triangle 4,6,7

Do these sides create a triangle 10,11,20

Do these sides create a triangle 13,5,18

If a triangle has a right angle and an angle of 50 what is the remaining angle

Do the sides 10,11,21 create a triangle

Do the sides 20,18,21 create a triangle

Do the sides 8,3,10 create a triangle

A triangle has an angle of 60 and 40 what is the third angle

A triangle has angles of 50 and 80 what is the other angle