Question

I don't know how to solve but a small explanation would be nice​

Answer 1

Answer:

angle 1, 5, 7

Step-by-step explanation:

angle 3 = angle 1 (vertically opp angles)

angle 3 = angle 5 (alt angles, parallel lines)

angle 3 = angle 7 (corresponding angles, parallel lines)

Topic: angle properties

If you like to venture further, feel free to check out my insta (learntionary). It would be best if you could give it a follow. I'll be constantly posting math tips and notes! Thanks!