NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 76 - 78 of 2000

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Question number: 76

» Mathematics » Circles

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Question

As shown in the figure, ABC is a triangle inscribed in a circle with center O. If then is equal to

Circle c Circle c: Circle through B with center O Arc d Arc d: Semicircle through D and E Segment f Segment f: Segment [A, O] Segment g Segment g: Segment [O, B] Segment h Segment h: Segment [A, C] Segment i Segment i: Segment [C, B] Segment j Segment j: Segment [A, B] Point O O = (3.26,2.9) Point O O = (3.26,2.9) Point O O = (3.26,2.9) Point B B = (5.16,1.76) Point B B = (5.16,1.76) Point B B = (5.16,1.76) Point A Point A: Point on c Point A Point A: Point on c Point A Point A: Point on c Point C Point C: Point on c Point C Point C: Point on c Point C Point C: Point on c 20â° text1 = “20â°”

Image of Triangle ABC Inscribed in Center and ∠OBA = 20 Degree

Representing the image of triangle ABC inscribed in a circle with center O and ∠OBA = 20 degree

Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

Question number: 77

» Mathematics » Lines and Angles

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The basic elements of a triangle are

Choices

Choice (4) Response

a.

3 vertices

b.

3 sides

c.

3 angles

d.

All a. , b. and c. are correct

Question number: 78

» Mathematics » Areas of Parallelograms and Triangles

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ABCD is a parallelogram and ‘O’ is the point of intersection of its diagonals AC and BD. If the area of , the area of the parallelogram is ________.

Choices

Choice (4) Response

a.

b.

c.

d.

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