Respuesta :

meredith48034

Answer:

1. <1 + 50 = 180

   < 1= 130

2. <3 + 50= 180

     <3 = 130

Step-by-step explanation:

mashnoovc

Since this is the proof I will only do explanation:

Step-by-step explanation:

If m∠1=a and m∠3=b:

a+50°=180° because they are supplementary

and b+50°=180° because they are supplementary

Because of this:

a+50°=b+50°=180°

Subtract 50°:

⇒ a=b=130°

They are equal and they equal 130°