Question

classify the four angles of the quadrilateral.

Explanation:

• An acute angle is an angle that measures less than \(90^{\circ}\).
• A right angle is an angle that measures exactly \(90^{\circ}\).
• An obtuse angle is an angle that measures greater than \(90^{\circ}\) but less than \(180^{\circ}\).
• \(\angle A = 70^{\circ}\), so it is acute.
• \(\angle B=140^{\circ}\), so it is obtuse.
• \(\angle C = 60^{\circ}\), so it is acute.
• \(\angle D = 90^{\circ}\), so it is right.

Answer:

• \(\angle A\): Acute
• \(\angle B\): Obtuse
• \(\angle C\): Acute
• \(\angle D\): Right