IMO- Mathematics Olympiad Class 9: Questions 204 - 209 of 919

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Question number: 204

» Lines, Angles and Quadrilaterals

MCQ▾

Question

Ray OE bisects ∠AOB and OF is the ray opposite OE, then ∠FOB = ________

Image defines Ray OE bisects ∠AOB and OF is the ray opposite OE

Image Defines Ray OE Bisects ∠AOB and of Is the Ray Opposite OE

Image defines Ray OE bisects ∠AOB and OF is the ray opposite OE and find ∠FOB

Choices

Choice (4) Response

a.

∠BOE

b.

∠FOA

c.

∠AOE

d.

∠FOE

Question number: 205

» Lines, Angles and Quadrilaterals

MCQ▾

Question

In the figure, p is greater than q by one third of a right angle. Find the values of p and q.

Image defines the two angles

Image Defines the Two Angles

Image defines the angles and find the values of p and q

Choices

Choice (4) Response

a.

p = 115˚ and q = 65˚

b.

p = 75˚ and q = 105˚

c.

p = 105˚ and q = 75˚

d.

p = 65˚ and q = 115˚

Question number: 206

» Lines, Angles and Quadrilaterals

MCQ▾

Question

If two supplementary angles are in the ratio 13: 5, then the angles is ________

Choices

Choice (4) Response

a.

125˚, 55˚

b.

145˚, 35˚

c.

130˚, 50˚

d.

120˚, 60˚

Question number: 207

» Lines, Angles and Quadrilaterals

MCQ▾

Question

In the given figure, ∠COD is a right angle. ∠AOC and ∠BOD are in the ratio of 3: 2, thus ∠BOD measures________

Image defines the different angle, find BOD

Image Defines the Different Angle, Find BOD

Image defines the angles and its ratio

Choices

Choice (4) Response

a.

50˚

b.

40˚

c.

54˚

d.

36˚

Question number: 208

» Lines, Angles and Quadrilaterals

MCQ▾

Question

Two supplementary angles differ by 58˚. Then the angles are ________

Choices

Choice (4) Response

a.

116˚, 64˚

b.

119˚, 61˚

c.

118˚, 62˚

d.

117˚, 63˚

Question number: 209

» Lines, Angles and Quadrilaterals

MCQ▾

Question

ABC is an equilateral triangle for side 43cm . P, Q and R are midpoints of AB, CA and BC respectively. The area of triangle PQR is (in cm2 ) ________

ABC is an equilateral triangle for side given

ABC Is an Equilateral Triangle for Side Given

Image ABC is an equilateral triangle, find the area of triangle is PQR

Choices

Choice (4) Response

a.

34

b.

32

c.

23

d.

33

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