plx solve qtn no.6 and 7
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Answer:
Step-by-step explanation:
ANSWER 6
(i) ABCD is a parallelogram.
angle DAC = angle BCA (Alternate interior angles) ... (1) And angle BAC = angle DCA (Alternate interior angles) ... (2)
But it is given that AC bisects A.
DAC = BAC ... (3) From equations (1), (2) and (3), we have
DAC = BCA = BAC = DCA ... (4)
DCA = BCA
Hence, AC bisects C.
(ii) From equation (4), we have
DAC = DCA
DA = DC (side opposite to equal angles are equal)
But DA = BC and AB = CD (opposite sides of parallelogram)
AB = BC = CD = DA Hence, ABCD is rhombus
AND ANSWER 7 I DON'T KNOW SRY