in trapezium ABCD side AB||PQ|| DC, AP=15 ,PD=12,QC=14 find BQ
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Given : ABCD is a trapezium
AB || PQ || DC
AP =15 cm , PD = 12 cm and QC =14 cm
In figure join AC,
Since, AB | | DC & PQ || AB
PQ || DC
[Since lines parallel to the same lines are also parallel to each other]
In ∆ ADC
PO || DC
[ PQ | | DC]
By using B.P.T ,
AP/ PD = AO/CO …………(1)
In ∆ABC
QO | | AB ,
[PQ | | AB]
By using B.P.T ,
CQ/BQ = CO/AO
BQ/CQ = AO/CO …………(2)
[Reciprocal the term]
From eq. 1 & 2 ,
BQ/ CQ =AP/ PD ,
BQ/ 14 =15/ 12
12 BQ = 14 × 15
BQ = (14×15)/12 = (14 × 5)/4
BQ = 70/4 = 35/2
BQ = 17.5 cm
Hence, the value of BQ = 17.5 cm
HOPE THIS WILL HELP YOU….
AB || PQ || DC
AP =15 cm , PD = 12 cm and QC =14 cm
In figure join AC,
Since, AB | | DC & PQ || AB
PQ || DC
[Since lines parallel to the same lines are also parallel to each other]
In ∆ ADC
PO || DC
[ PQ | | DC]
By using B.P.T ,
AP/ PD = AO/CO …………(1)
In ∆ABC
QO | | AB ,
[PQ | | AB]
By using B.P.T ,
CQ/BQ = CO/AO
BQ/CQ = AO/CO …………(2)
[Reciprocal the term]
From eq. 1 & 2 ,
BQ/ CQ =AP/ PD ,
BQ/ 14 =15/ 12
12 BQ = 14 × 15
BQ = (14×15)/12 = (14 × 5)/4
BQ = 70/4 = 35/2
BQ = 17.5 cm
Hence, the value of BQ = 17.5 cm
HOPE THIS WILL HELP YOU….
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