IMO- Mathematics Olympiad (SOF) Class 7: Questions 637 - 641 of 1012

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Question number: 637

» Practical Geometry - Lines and Angles

MCQ▾

Question

The complement of an acute angle is ________angle.

Choices

Choice (4) Response

a.

Acute

b.

Right

c.

A straight

d.

Obtuse

Question number: 638

» Comparing Quantities

MCQ▾

Question

In a jungle, total animals are 240. The number of elephants is of the number of other animals. How many elephants are there in the jungle?

Choices

Choice (4) Response

a.

40

b.

60

c.

100

d.

50

Question number: 639

» Comparing Quantities

MCQ▾

Question

Two buses start at the same point on a straight highway facing opposite directions. Each bus drives 5 miles take a left turn and drives 12 miles. How far apart are the two buses?

Choices

Choice (4) Response

a.

26 miles

b.

30 miles

c.

24 miles

d.

21 miles

Question number: 640

» Triangle and Its Properties

MCQ▾

Question

The three angles of a triangle are in the ratio 2: 4: 2, then the greatest angle is ________.

Choices

Choice (4) Response

a.

b.

c.

d.

Question number: 641

» Practical Geometry - Lines and Angles

MCQ▾

Question

In the figure (not drawn to scale), ABCD is rhombus and BD is diagonal. Find .

Arc c Arc c: Semicircle through F and GArc d Arc d: Semicircle through E and ISegment f Segment f: Segment [A, B] Segment g Segment g: Segment [B, C] Segment h Segment h: Segment [C, D] Segment i Segment i: Segment [D, A] Segment k Segment k: Segment [D, B] Point A A = (3.91,1.61) Point A A = (3.91,1.61) Point A A = (3.91,1.61) Point B B = (6,1.61) Point B B = (6,1.61) Point B B = (6,1.61) Point C C = (5.46,3.26) Point C C = (5.46,3.26) Point C C = (5.46,3.26) Point D D = (3.42,3.26) Point D D = (3.42,3.26) Point D D = (3.42,3.26) 35â° text1 = “35â°”

Image Made by a Rhombus and Diagonal BD

Showing an image made by a rhombus and diagonal BD, so find angle BCD

Choices

Choice (4) Response

a.

b.

c.

d.

f Page
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