Following is the performance of a cricket team in
the matches it played.
Year
Wing
Loses
8
2
Last year
2
4
This year
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5 th Question: AX and CY are respectively the bisectors of opposite angles A and C of a parallelogram ABCD . Show that AX is parallel to CY
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Answer
Given,
ABCD is a Parallelogram
AX is the bisector of ∠A
CY is the bisector of ∠C
To Prove
AX ║ CY
Proof
ABCD is a parallelogram
∠A = ∠C (Opp. angles of a paralleogram are equal)
\frac{1}{2}
2
1
∠A = \frac{1}{2}
2
1
∠C (Halves of equals are equal)
∴ ∠1 = ∠2
(AX and CY bisects A and C)
AB ║CD and CY is the transversal (Parallel lines of a parallelogram)
∴ ∠2 = ∠3
But ∠1 = ∠2
⇒ ∠1 = ∠3
∴ AX ║ CY
(Corresponding angles 1 and 3 are equal, therfore the lines are parallel)
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