00:01
So, let's redraw the rhombus in the question.
00:09
So, let's denote the vertex here a, b, c, d.
00:22
So, because this is rhombus, so we have a, b equal to a, d equal to b, c equal to c, d.
00:35
And let's denote the angle 3, 2, 4, 5, 3.
00:49
So, we have, because a, b parallel to d, c, so we will have the angle a, b, d equal to the angle b, d, c.
01:14
So, it's equal to angle number 2, so it's equal to 53 degrees.
01:28
And then, next, to find the angle 3, we have a, b equal to a, d.
01:40
Then, we will have the angle a, b, d equal to the angle a, b, b, d.
01:58
And this is the angle 3 and equal to 53 degrees...
