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Byju's Answer
Standard IX
Mathematics
Equal Intercept Theorem
l, m, n are p...
Question
l, m, n are parallel lines. If p intersects them at A, B, C and q at D,E, F then:
A
AB = DE and BC = EF always
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B
at least one of the pairs AB, DE and BC, EF are necessarily equal.
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C
at least one of the pairs AB, BC and DE, EF are necessarily equal.
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D
A
B
B
C
=
D
E
E
F
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Solution
The correct option is
C
A
B
B
C
=
D
E
E
F
A
D
F
C
forms a trapezium
A
D
∥
C
F
.............. (Since, bases of trapezium are parallel)
A
C
congruent to
D
F
i.e.
A
C
=
D
F
........ (Since, opposite sides of a trapezium are congruent)
∵
l
,
m
,
n
are parallel
∴
The middle line
m
divides
A
C
and
D
F
in equal ratio.
∴
A
B
B
C
=
D
E
E
F
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0
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