# Lines, Angles and Quadrilaterals (IMO- Mathematics Olympiad (SOF) Class 9): Questions 57 - 61 of 126

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## Question number: 57

» Lines, Angles and Quadrilaterals

MCQ▾

### Question

XYZ is an equilateral triangle for side. J, K and L are midpoints of XY, YZ and XZ respectively. The area of triangle JKL is (in) ________

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 58

» Lines, Angles and Quadrilaterals

MCQ▾

### Question

The supplementary angle of an angle is one fifth of itself. Then the angle of its supplement are________

### Choices

Choice (4) Response

a.

150˚, 30˚

b.

160˚, 20˚

c.

160˚, 130˚

d.

150˚, 45˚

## Question number: 59

» Lines, Angles and Quadrilaterals

MCQ▾

### Question

The supplementary angle of an angle is one third of itself. Then the angle of its supplement are________

### Choices

Choice (4) Response

a.

120˚, 360˚

b.

60˚, 180˚

c.

135˚, 45˚

d.

60˚, 120˚

## Question number: 60

» Lines, Angles and Quadrilaterals

MCQ▾

### Question

If a straight line meets two other straight lines so as to make the sum of the two interior angles on one side of the transversal less than two right angles, then the other straight lines extended infinitely, will meet ________ the transversal

### Choices

Choice (4) Response

a.

On

b.

On another side of

c.

Can’t be determined

d.

On that side of

## Question number: 61

» Lines, Angles and Quadrilaterals

MCQ▾

### Question

The measure of an angle is twice times the measure of its supplementary angle. Then the angles are________

### Choices

Choice (4) Response

a.

40˚, 160˚

b.

18˚, 72˚

c.

50˚, 200˚

d.

120˚, 60˚

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