Line is intersected by line , as shown in the diagram below. Based on the diagram, which of the following equations must be true? *
∠1 + ∠2 = 180°
∠1 + ∠3 = 180°
∠2 + ∠3 = 90°
∠2 + ∠4 = 90°
![Line is intersected by line as shown in the diagram below Based on the diagram which of the following equations must be true 1 2 180 1 3 180 2 3 90 2 4 90 class=](https://us-static.z-dn.net/files/de2/984eb38aa72a82dabd7a81f3c0159dc7.png)