1, 2 and 3 are the three internal angles of a triangle, 1 = 30 degrees, 2 = 40 degrees, 3 = () degrees. This is the () triangle 1 = 40 degrees 2 = 50 degrees 3 = () degrees this is a () triangle 1 = 50 degrees 2 = 60 degrees 3 = () degrees this is a () triangle 1 = 80 degrees 2 = 60 degrees 3 = () degrees this is a () triangle Get it right, there's a prize

1, 2 and 3 are the three internal angles of a triangle, 1 = 30 degrees, 2 = 40 degrees, 3 = () degrees. This is the () triangle 1 = 40 degrees 2 = 50 degrees 3 = () degrees this is a () triangle 1 = 50 degrees 2 = 60 degrees 3 = () degrees this is a () triangle 1 = 80 degrees 2 = 60 degrees 3 = () degrees this is a () triangle Get it right, there's a prize

1, 2 and 3 are the three internal angles of a triangle, 1 = 30 degrees, 2 = 40 degrees, 3 = (110) degrees, this is (obtuse angle) triangle, 1 = 40 degrees, 2 = 50 degrees, 3 = (90) degrees, this is (right angle) triangle
1 = 50 degrees 2 = 60 degrees 3 = (70) degrees this is a (acute) triangle
1 = 80 degrees, 2 = 60 degrees, 3 = (40) degrees, this is a triangle