STD IX - Maths (II) | Super Survey Maker

If one angle of a triangle is equal to the sum of the other two, then the triangle is

An isosceles triangle

An obtuse-angled triangle

An equilateral triangle

A right-angled triangle

A reflex angle is

Greater than 90° but less than 180°

Greater than 90° but less than 270°

Greater than 180° but less than 360°

Greater than 270° but less than 360°

If two interior angles on the same side of a transversal intersecting two parallel lines are in the ratio 2:3, then the smaller of the two angles is

72°

108°

54°

36°

The exterior angle of a triangle is equal to the sum of two

Exterior angles

Interior angles

Interior opposite angles

Alternate angles

Two lines PQ and RS intersect each other at O. If angle POR is 57°, then angle POS is

57°

123°

33°

23°

A, B and C are three angles of a triangle. If A + B = 145° and B + C = 100°, then angles A, B and C are

80°, 65°, 35°

80°, 35°, 65°

65°, 80°, 35°

35°, 65°, 80°

An exterior angle of a triangle is 120° and the interior opposite angles are in the ratio 5:7. Measure of the interior opposite angles are

40°, 80°

50°, 70°

60°, 60°

30°, 90°

If two parallel lines are cut by a transversal, then which of the following is not true

Interior angles on the same side of the transversal are supplementary.

Interior angles on the same side of the transversal are complementary.

Alternate interior angles are equal.

Corresponding angles are equal.

Two lines are respectively perpendicular to two perpendicular lines, then these two perpendicular lines are ______________ to each other.

Parallel

Perpendicular

Inclined at some acute angle

Intersecting at 110°

Which of the following are not angles of a triangle?

60°, 40°, 80°

110°, 30°, 40°

90°, 30°, 60°

50°, 60°, 80°

STD IX - Maths (II)

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