Pls help 70 70 points pls Identify the angle pair relationship

Angle 7 and 13
Angle 6 and 4
Angle 1 and 15
Angle 10 and 16
Angle 5 and 6
Angle 3 and 12
Angle 1 and 10
Angle 9 and 13
Angle 4 and 2
Angle 8 and 16

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.