Everything Maths Grade 10

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21

21

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11.Study the diagram below; it is not necessarily drawn to scale. Two triangles in the figure are congruent:
△CDE△CBF. Additionally,EA=ED. You need to prove thatABF Eis a parallelogram.

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12.Given the following diagram:

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a)Show thatBCDFis a parallelogram.

b)Show thatADCFis a parallelogram.

c)Prove thatAE=EC.

Chapter 12. Euclidean geometry 413