NSTSE (National Science Talent Search Exam- Unified Council) Class 9: Questions 72 - 73 of 2000

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Question number: 72

» Mathematics » Circles

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Question

AB is a chord of a circle with center O and radius 5 cm. If and . Find the length of chord AB.

Choices

Choice (4)Response

a.

16 cm

b.

28 cm

c.

4 cm

d.

8 cm

Question number: 73

» Mathematics » Quadrilaterals

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In the given figure AO and DO are the bisectors of and of the quadrilateral ABCD. Then the is

Quadrilateral poly1Quadrilateral poly1: Polygon A, B, C, DArc eArc e: Semicircle through G and HArc hArc h: Semicircle through I and JSegment aSegment a: Segment [A, B] of Quadrilateral poly1Segment bSegment b: Segment [B, C] of Quadrilateral poly1Segment cSegment c: Segment [C, D] of Quadrilateral poly1Segment dSegment d: Segment [D, A] of Quadrilateral poly1Segment fSegment f: Segment [D, E] Segment gSegment g: Segment [A, F] Point AA = (1.96,1.58) Point AA = (1.96,1.58) Point AA = (1.96,1.58) Point BB = (3.03,4.4) Point BB = (3.03,4.4) Point BB = (3.03,4.4) Point CC = (-0.71,4.33) Point CC = (-0.71,4.33) Point CC = (-0.71,4.33) Point DD = (-1.55,1.6) Point DD = (-1.55,1.6) Point DD = (-1.55,1.6) Point OPoint O: Intersection point of f, gPoint OPoint O: Intersection point of f, gPoint OPoint O: Intersection point of f, g100â°text1 = “100â°”75â°text1_1 = “75â°”

Image of a Quadrilateral ABCD

Choices

Choice (4)Response

a.

b.

c.

d.

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