Question

what type of angle is ∠dea?
straight
acute
right
obtuse

Explanation:

An acute angle is an angle that measures less than \(90^{\circ}\). A right angle measures exactly \(90^{\circ}\). An obtuse angle measures between \(90^{\circ}\) and \(180^{\circ}\). A straight angle measures \(180^{\circ}\). Given that \(\angle DEA = 77^{\circ}\), and \(77^{\circ}<90^{\circ}\).

Answer:

acute