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Acute, Obtuse and Reflex Angles

If the sum of...

Question

If the sum of two angles is less than 90°, then the angles are:

A

right angles

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B

obtuse angles

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C

acute angles

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D

reflex angles

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Solution

The correct option is C acute angles

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Similar questions

Q. Which of the following statements are true (T) and which are false (F):

(i) Sum of the three angles of a triangle is 180°.

(ii) A triangle can have two right angles.

(iii) All the angles of a triangle can be less than 60°

(iv) All the angles of a triangle can be greater than 60°.

(v) All the angles of a triangle can be equal to 60°.

(vi) A triangle can have two obtuse angles.

(vii) A triangle can have at most one obtuse angles.

(viii) If one angle of a triangle is obtuse, then it cannot be a right angled triangle.

(ix) If one angle of a triangle is obtuse, then it cannot be a right angled triangle.

(x) An exterior angle of a triangle is less than either of its interior opposite angles.

(xi) An exterior angle of a triangle is equal to the sum of the two interior opposite angles.

Q. If the sum of two angles is less than 90°, then the angles are:

An obtuse-angled triangle is one in which all the angles are less than $90^{\circ}$ .

An obtuse-angled triangle is one in which all the angles are less than 90°. State true or false.

Q. Acute angle is an angle which is less than

90^{\circ}

and an obtuse angle is any angle which is greater than

90^{\circ}

.

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Acute, Obtuse and Reflex Angles

Standard VI Mathematics

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