Answer:
x = 8, so the angles measure 60 degrees.
Step-by-step explanation:
Alternate exterior angles are congruent, so we have:
[tex]10x - 20 = 7x + 4[/tex]
[tex]3x = 24[/tex]
[tex]x = 8[/tex]
[tex]10(8) - 20 = 80 - 20 = 60[/tex]
[tex]7(8) + 4 = 56 + 4 = 60[/tex]
