O Level 2012 Maths D P2 Que 4-5
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Transcript of O Level 2012 Maths D P2 Que 4-5
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AB and CD are parallel.EGHF is a straight line.HCF= 46° and HFC = 32°.
(i) Find cttr. := I ~O -
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(ii) Find cno.
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(iii) Find HGB.
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(i) Show that triangles ABC and EDC are similar.Give your reasons.
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(b) A, B, D and E are points on a circle.
AD and BE intersect at C.
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Given that AC = 5 ern, BC = 5.5 em and CE = 2 em, find the length of the chordAa L 2 .
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5Q.20 .
.A. . ·········~···:·1500····· D..... ......
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AD and BC are arcs of circles with centre O.A is a point on OB, and D is a point on OC.OA = 20cm and AB = 25 ern.ADD = 150°.
(a) Calculate the perimeter of the haded shape ABCD.0..'" t~
1,S· 1 ~6 (\2. 'f n x '1s)t1~·r -t 51rr·?>,..?O
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Answer ;)...'?~ cm [3]
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(c) The shapeABCD is used to make a lampshade by joiningAB and DC.
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Calculate the radius, rem, 9{ the circular top of the lampsha e.. (\.(~\N"-rtv.tA1 t- ';. L ~~ C¥-'c.
\\'50 .,... ~ X') 0 ( ,
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