Triangular fun

Geometry Level 1

Consider a triangle with vertices \(A, B\) and \(C\) such that the two of the interior angles are \(\angle A = 20^{\circ}\) and \(\angle B = 10^{\circ}\).

What kind of triangle is it?

Isosceles A four sided triangle None of these Right Equilateral There is no such triangle Scalene Its actually an oblate spheroid

Excel in math and science

Master concepts by solving fun, challenging problems.

It's hard to learn from lectures and videos

Learn more effectively through short, conceptual quizzes.

Our wiki is made for math and science

Master advanced concepts through explanations, examples, and problems from the community.

Used and loved by 4 million people

Learn from a vibrant community of students and enthusiasts, including olympiad champions, researchers, and professionals.