Find three angles of a triangle if you know that the first angle is 60 degrees and the second 2/3

Find three angles of a triangle if you know that the first angle is 60 degrees and the second 2/3 find the second and third angles If you know that the sum of these angles is 180 degrees.

First, let’s find the second corner. To do this, multiply 2/3 by the first angle:
1) 60 * 2/3 = (3 * 20 * 2) / 3 = 40 ° – the value of the second angle.
Find the remaining corner. To do this, subtract the sum of the first and the second from the sum of all.
2) 40 + 60 = 100 ° – the sum of the first two angles.
3) 180 – 100 = 80 ° – third angle.
Answer: the second angle is 40 °, the third is 80 °.