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primary 6 | Maths | Geometry
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Lin Yun Yi
Lin Yun Yi

primary 6 chevron_right Maths chevron_right Geometry

Date Posted: 5 years ago
Views: 618
snell
Snell
5 years ago
(a)
∠DEC = ∠ADE (alt ∠s )

(b)
∠DCF = 70 °/2 = 35°

Or
∠CEF = 180 ° - ∠DEC = 110°
∠DCF = (180 - 110 °)/2 = 35°

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Eunice Ong
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