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Q.

State true or false.


In a ΔABC , P , and Q and are respectively the mid-point of AB are respectively the mid-point of and BC and . R . is the mid-point of AP is the mid-point of . Then ar(ΔPBQ)=ar(ΔARC) . Then .


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a

True

b

False 

answer is A.

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Detailed Solution

Given that, P and Q are respectively the midpoint of AB and BC .
And R is the midpoint of AP .
Question ImageWe know that, median divides the triangle into two triangles of equal area.
PC is the median of ΔABC , so it divides into 2 triangles of equal areas.
ar ΔBPC =ar ΔAPC                                 ......(1)
RC is the median of ΔAPC .
  ar ΔARC = 1 2 ar ΔAPC                               ......(2)
From (1) and (2), ar ΔBPC =2ar ΔARC .    ……(3)
PQ is the median of ΔBPC .
ar ΔPBQ = 1 2  ar ΔBPC
2ar ΔPBQ =ar ΔBPC                                  ......(4)
From equation (3) and (4), we get,
ar ΔPBQ =ar ΔARC .                                   ......(5)
Hence, the statement is true.
Hence, option 1) is correct.
 
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