Question

10
∠1 and ∠2 are called _________.
vertical angles
complementary angles
supplementary angles
acute angles

Explanation:

• Vertical angles are formed when two lines intersect. They are opposite each other.
• Complementary angles add up to \(90^{\circ}\).
• Supplementary angles add up to \(180^{\circ}\). Here, \(\angle1+\angle2 = 180^{\circ}\) (they form a linear pair, which is a type of supplementary angles).
• Acute angles are angles less than \(90^{\circ}\).

Answer:

supplementary angles