NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 138 - 140 of 2000

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Question number: 138

» Mathematics » Circles

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Question

In the following figure if O is the center of the circle, then find x.

Circle c Circle c: Circle through B with center O Arc d Arc d: Semicircle through D and E Arc e Arc e: Semicircle through F and G 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] Point O O = (3.26,2.9) Point O O = (3.26,2.9) Point O O = (3.26,2.9) Point B B = (4.74,1.18) Point B B = (4.74,1.18) Point B B = (4.74,1.18) 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 108â° text1 = “108â°” xâ° text1_1 = “xâ°”

Image of a Circle with Center O and Unknown Angle X

Representing the image of a circle with center O and unknown angle x

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Choice (4) Response

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d.

Question does not provide sufficient data or is vague

Question number: 139

» Mathematics » Areas of Parallelograms and Triangles

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The area of a trapezium is . The distance between its parallel sides is 2 cm. If one of the parallel sides is 3.5 cm, the other parallel side is ________.

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Choice (4) Response

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b.

c.

d.

Question number: 140

» Mathematics » Lines and Angles

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From the adjoining figure from a linear pair and . Then a, b are

Arc e Arc e: Semicircle through I and F Arc c Arc c: Semicircle through E and G Segment f Segment f: Segment [A, B] Segment g Segment g: Segment [C, D] Point A A = (-0.46,0.54) Point A A = (-0.46,0.54) Point A A = (-0.46,0.54) Point B B = (6.46,0.52) Point B B = (6.46,0.52) Point B B = (6.46,0.52) Point C Point C: Point on f Point C Point C: Point on f Point C Point C: Point on f Point D D = (2.3,3.72) Point D D = (2.3,3.72) Point D D = (2.3,3.72) b text1 = “b” a text1_2 = “a”

Image of Two Adjoining Angles a and B

Representing the image of two adjoining angles making a supplementary angle

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Choice (4) Response

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