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Angle less than `90^(@)` is called ___

An angle measuring 90^(@) is called

A triangle whose one angle is more than 90^(@) is called a scalene triangle (b) a right triangle an acute triangle (d) an obtuse triangle

Acute angle an angle whose measure is greater than 0^(@) but less than 90^(@) is called an acute angle.

Obtuse angle an angle whose measure is more than 90^(@) but less than 180^(@) is called an obtuse angle (Fig.11.27) .

A sector of an angle 90^(@) is called.

An angle which measures more than 180^(@) but less than 360^(@) , is called

Can a triangle have two rght angles? two abtuse angles? two acute angles? all angles more than 60^(@) all angles less than 60^(@)? all angles to 60^(@) ?

If in a /_\ABC, a^2cos^2A=b^2+c^2, then angle A is (A) less than 45^0 (B) more than of 45^0 and less than 90^0 (C) right angled (D) obtuse angle

Assertion : Delta ABC is an acute angled triangle, angle A, angle B and angle C are less than 90^(@) Reason : Triangles are classified according to the sides and the angles.