The angles of a triangle are in the ratio 5 : 3: 7. The triangle is
A. a right triangle
B. an acute-angled triangle
C. an obtuse-angled triangle
D. an isosceles triangle
Answer:B
The angles of a triangle are in the ratio 5 : 3: 7. The triangle is
A. a right triangle B. an acute-angled triangle C. an obtuse-angled triangle D. an isosceles triangle