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nexus9112 [7]
2 years ago
7

Help me plsss i am soo bad at this

Mathematics
1 answer:
lara [203]2 years ago
8 0

Step-by-step explanation:

GIVEN: O is the mid point of AC & BD.

Therefore, AO = CO & BO = DO

\therefore \: AO   \: \cong \: CO.. (given) \\  \\  \:  \:  \:  \:  \angle \: AOB  \: \cong \:\angle \:COD\\..(vertically\:opposite\:angles) \:  \\  \\  \& \: \:  \:   BO  \: \cong \: DO.. (given)  \\  \\  \therefore \triangle \: AOB  \:  \cong \:  \triangle \:COD  \\ ..(by \: SAS \: test  \: of  \: congruence ) \\  \\   \therefore AB =  CD.. \\ (Corresponding  \: sides  \: of  \: congruent  \: triangles)

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Answer:

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Step-by-step explanation:

The area (A) of a triangle using Heron's formula is

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Then

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