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If the degree ratio of the three internal angles of a triangle is 2:3:4, then it is a acute triangle B obtuse triangle C right triangle D obtuse angle or right triangle
2+3+4=9
180/9=20
The three angles are 40 degrees, 60 degrees and 80 degrees
Acute triangle
The degree ratio of the three angles of a triangle is 1:1:1. This triangle is () a right triangle B acute triangle C obtuse triangle D can not be determined
The degree ratio of the inner angle of a triangle is 1:1:1. The triangle is (b), 180 △ 3 = 60, 60 is an acute angle
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