Summary Complete Geometric Proofs and Reasons: Grade 12 NSC Mathematics Examinations

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, PROPOP. TIONALTl TI-IEORlM ' C Prop, theorem , S tote parQlle•sJ

C.,ven : Ofl/8C
R~qy,red e-o prove ·. AD -: At
BD Et

con s t r uc t h e,9h t h r e Ia t, v e t o ba & e AO In


AAOE. (onSC:ruct: he19ht 'k' re1QtlV€ co l,C1se AE
'"' AADf. Jolt"\ a~ Ql°"\d l)C. t:O creoee 4QOf

and ACED .


A..-ea AAOE: 1,a11o•h
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Area 4 8Df { · so· h _., ob 1:\ISC!. 4 has ..L he19he
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r AP cuesule 0~ the cr•ari91e.

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Areo : 1-·AE•k
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El
8ut:: A8Dt:: llOCE Csarne ba.se, .sanie he 1 9nt: and
''::J'"9 between para11e1 lines)

Area AAOE- Ateo 6.AOE, ar-ea Of AA OE , a; ter s1mp1 If 1cqc•or'l eci,oo• s
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bot~ AO Qr\d Af
Area A ~Dt Arec:i AOC~


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