The degree ratio of the top angle to the bottom angle of an isosceles triangle is 1:2. This triangle is a () angle triangle Please tell me why ()?

The degree ratio of the top angle to the bottom angle of an isosceles triangle is 1:2. This triangle is a () angle triangle Please tell me why ()?

The base angle is 180 × 2 ^ (2 + 2 + 1) = 72 degrees
The vertex angle is 72 △ 2 = 36 degrees
So it's an acute triangle

The triangle ABC is an isosceles triangle. The degree of vertex angle a is lower than that of B. what are the angles a, B and C?

Let angle B be x degree, because it is an isosceles triangle, so angle c is also X
Angle a is twice that of angle B, so angle a is 2x
X+X+2X=180
X = 45 degrees
Therefore, a = 90, B = 45, C = 45

I don't know what to do! Given that the triangle ABC is isosceles triangle, and the angle a = 36 degrees, ab = AC, find the value of BC / ab

I don't know what to do! Given that the triangle ABC is isosceles triangle, and the angle a = 36 degrees, ab = AC, find the value of BC / ab
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