If one of the angles of a triangle is 100°, then the angle between the angle bisectors of other angles is

The correct answer is (c).

The sum of the three interior angles of a triangle is always 180°. Therefore, if one of the angles is 100°, the other two angles must add up to 80°. The angle bisectors of two angles of a triangle divide the angles into two equal parts. Therefore, the angle between the angle bisectors of the other two angles is 120°.

Option (a) is incorrect because the sum of the three interior angles of a triangle is always 180°. Therefore, if one of the angles is 100°, the other two angles must add up to 80°. The angle bisectors of two angles of a triangle

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