NCO- Cyber Olympiad (SOF) Class 8: Questions 143 - 144 of 510

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Question number: 143

» Mental Ability » Basic Geometry

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Question

In the adjoining figure it is given that and . If and , find DC.

Triangle poly1 Triangle poly1: Polygon A, B, C Segment c Segment c: Segment [A, B] of Triangle poly1 Segment a Segment a: Segment [B, C] of Triangle poly1 Segment b Segment b: Segment [C, A] of Triangle poly1 Segment f Segment f: Segment [A, D] Segment g Segment g: Segment [D, E] Segment h Segment h: Segment [E, F] Point A A = (4.18,3.88) Point A A = (4.18,3.88) Point A A = (4.18,3.88) Point B B = (2.78,0.76) Point B B = (2.78,0.76) Point B B = (2.78,0.76) Point C C = (7.98,0.82) Point C C = (7.98,0.82) Point C C = (7.98,0.82) Point D Point D: Point on a Point D Point D: Point on a Point D Point D: Point on a Point E Point E: Point on c Point E Point E: Point on c Point E Point E: Point on c Point F Point F: Point on a Point F Point F: Point on a Point F Point F: Point on a

Image of the Adjoining Figure of a Triangle ABC Having EF∥AD and ED∥AC

Representing the image of the adjoining figure of a triangle ABC having EF∥AD and ED∥AC

Choices

Choice (4) Response

a.

46.67 cm

b.

49 cm

c.

36 cm

d.

23.34 cm

Question number: 144

» Mental Ability » Basic Geometry

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Two chords AB and CD of a circle cut each other when produced outside the circle at P. If AD and BC are joined, and , find .

Circle c Circle c: Circle through B with center O Arc d Arc d: Semicircle through E and F Arc e Arc e: Semicircle through G and H Arc p Arc p: Semicircle through I and J Segment f Segment f: Segment [C, B] Segment g Segment g: Segment [A, D] Segment h Segment h: Segment [D, P] Segment i Segment i: Segment [P, B] Segment j Segment j: Segment [C, D] Segment k Segment k: Segment [A, B] Point B B = (6.34,1.32) Point B B = (6.34,1.32) Point B B = (6.34,1.32) Point C Point C: Point on c Point C Point C: Point on c Point C Point C: Point on c Point A Point A: Point on c Point A Point A: Point on c Point A Point A: Point on c Point D Point D: Point on c Point D Point D: Point on c Point D Point D: Point on c Point P P = (11.24,2.5) Point P P = (11.24,2.5) Point P P = (11.24,2.5) 50â° text1 = “50â°â€ 35â° text1_1 = “35â°â€

Image of a Circle Having Two Chords AB and CD Having Angle P = 35

Representing the image of a circle having two chords AB and CD having angle P = 35

Choices

Choice (4) Response

a.

b.

c.

d.