Question

angles 1 and 3 are _? complementary right vertical supplementary

Explanation:

• Complementary angles: Two angles whose sum is \(90^{\circ}\). There is no indication that \(\angle1+\angle3 = 90^{\circ}\).
• Right angles: Angles equal to \(90^{\circ}\). There is no information to suggest \(\angle1\) or \(\angle3\) is \(90^{\circ}\).
• Vertical angles: Angles opposite each other when two lines cross. \(\angle1\) and \(\angle3\) are opposite each other where two lines intersect.
• Supplementary angles: Two angles whose sum is \(180^{\circ}\). \(\angle1\) and \(\angle3\) do not form a linear - pair (sum to \(180^{\circ}\) as supplementary angles in that case would).

Answer:

vertical