Type of triangle

How do I find the triangle type if the angle ratio is 2:3:7 ?

Correct result:

A =  30 °
B =  45 °
C =  105 °

Solution:

k=180/(2+3+7)=15 A=2⋅ k=2⋅ 15=30∘
B=3⋅ k=3⋅ 15=45∘
C=7⋅ k=7⋅ 15=105∘

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Math student
Obtuse-angled scalene triangle.

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