Current location - Training Enrollment Network - Mathematics courses - In the fourth grade of primary school, the angle 2 of the triangle is twice that of the angle 1, and the angle 3 is three times that of the angle 1. What kind of triangle answer is this?
In the fourth grade of primary school, the angle 2 of the triangle is twice that of the angle 1, and the angle 3 is three times that of the angle 1. What kind of triangle answer is this?
Solution: ∠2=2∠ 1, ∠3=3∠ 1, and because ∠1+∠ 2+∠ 3 =1.

So ∠1+∠ 2+∠ 3 = ∠1+2 ∠1+3 ∠1=180.

So 6 ∠ 1 = 180, so ∠ 1 = 30, ∠ 2 = 60, ∠ 3 = 90.

So this triangle is a right triangle.