Question

if the measure of angle 1 and angle 2 is 180 degrees, and the measure of angle 3 *
and angle 4 is 180 degrees, then the measure of angle 1 and angle 2 is equal to
the measure of angle 3 and angle 4.
which property is used in the above example?
additive property of equality
subractive property of equality
substitution property
reflexive property

Explanation:

The reflexive property states that \(a = a\). Here, since \(\angle1+\angle2 = 180^{\circ}\) and \(\angle3+\angle4=180^{\circ}\), we can say \(\angle1 + \angle2=\angle3+\angle4\) (because both are equal to \(180^{\circ}\), and by the reflexive property \(180^{\circ}=180^{\circ}\)).

Answer:

Reflexive property