Example Problems III — task. Mathematics CBSE, Class 9.

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$ABC$ is an isosceles triangle in which

$AB = AC$ .

$AD$ bisects exterior angle

$PAC$ and

$CD || AB$ (see Fig.).

Show that

(i)

$∠ DAC = ∠ BCA$ and

(ii)

$ABCD$ is a parallelogram.

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3. Example Problems III