help!

Describe at least two different relationships between angles formed by two intersecting lines?

Question

help!

Describe at least two different relationships between angles formed by two intersecting lines?

volleyballlover55 · Answer

@Michele_Laino

volleyballlover55 · Answer

is this a good answer?

michele_laino · Answer

can you make a drawing please?

volleyballlover55 · Answer

1. opposite angles are equal (vertical angles) ex. 1 and 3 and 2 and 4  2. two adjacent angles add to 180. Ex. 60 and 120.

michele_laino · Answer

|dw:1464798104430:dw|
in this case we can write:
$$\widehat A = \widehat B$$

volleyballlover55 · Answer

ok but is my answer correct?
1. opposite angles are equal (vertical angles) ex. 1 and 3 and 2 and 4  2. two adjacent angles add to 180. Ex. 60 and 120.
@Michele_Laino

michele_laino · Answer

furthermore this relation:
$$180 - \widehat A + \widehat B = 180$$
also holds
yes! I think it is correct!