00:01
Okay, so we are looking at a figure that is a quadrilateral, which means it has four sides, and we have sides a, b, and d, c being congruent and parallel.
00:11
So let's just sketch that real quick.
00:17
So we have this quadrilateral with a, b, c, and d.
00:24
Then we know a, b is congruent to d, c.
00:28
So we make those tick marks and parallel.
00:31
So we have the parallel symbol.
00:32
Now, opposite sides are shown parallel and equal.
00:40
So we've got that in our diagram.
00:43
Now, this student is saying that since a, b is parallel to d, c, they have alternate angles.
00:51
So then we know angles a, b, d...