Question

a) Classify each of the following angles:
(i)/_AOB
(ii) /_AOD
(iii)/_BOD
(iv) /_COD
just tell instructions that how to classify.​

Answer 1

Answer:

Step-by-step explanation:

An angle whose measure is more than 0° but less than 90° is called an acute angle. Angles having magnitudes 30°, 40°, 60° are all acute angles. In the adjoining figure, ∠X0Y represents an acute angle.

An angle whose measure is equal to 90° is called a right angle. In the adjoining figure ∠ABC represents a right angle.

An angle whose measure is more than 90° but less than 180° is called an obtuse angle. In the adjoining figure, ∠XYZ represents an obtuse angle.

An angle whose measure is equal to 180° is called a straight angle. In the adjoining figure, ∠XOY represents a straight angle.

An angle whose measure is more than 180° but less than 360° is called a reflex angle. In the adjoining figure, ∠POQ is a reflex angle. Angles having magnitudes 220°, 250°, 310° are all reflex angles.

An angle whose measure is equal to 360° is called a complete angle. In the adjoining figure, ∠BOA represents a complete angle.

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Answer 2

Answer:

i) Straight angle

ii) Obtuse angle

iii) Acute angle

iv) Obtuse angle

Step-by-step explanation:

Angle between 0° and 60° is known as Acute angle.

Angle between 90° and 180° is known as Obtuse angle.

Angle measuring 180° is known as Straight angle.

Hope it clears.