Question

The second angle of the triangle is 30 degrees larger than the first, while the third angle of the triangle is 3 times the second. How big is the first angle?

Answer 1

45 degrees

Explanation:

The first angle of the triangle is 45 degrees. This can be determined by the given information that the second angle is 30 degrees larger than the first and the third angle is 3 times the second. Since the second angle is 30 degrees larger than the first, the first angle must be 15 degrees, and the third angle must be 3x15=45 degrees.