Answer:
Answer
Open in answr app
(Image 1)
Given: △ABC & △PQR
AD is the median of △ABC
PM is the median of △PQR
PQAB=PRAC=PMAD→1
To prove: △ABC∼△PQR
Proof:Let us extend AD to point D such that that AD=DE and PM upto point L such that PM=ML
Join B to E, C to E, & Q to L and R to L
(Image 2)
We know that medians is the bisector of opposite side
Hence BD=DC & AD=DE *By construction)
Hence in quadrilateral ABEC, diagonals AE and BC bisect each other at point D
∴ABEC is a parallelogram
∴AC=BE & AB=EC (opposite sides of a parallelogram are equal) →2
Similarly we can prove that
PQLR is a parallelogram.
PR=QL,PQ=LR (opposite sides of a parallelogram are equal) →3
Given that
PQAB=PRAC=PMAD (frim 1)
⇒PQAB=QLBE=PMAD (from 2 and 3)
⇒PQAB=QLBE=2PM2A
Copyright © 2024 EHUB.TIPS team's - All rights reserved.
Answers & Comments
Answer:
Answer
Open in answr app
(Image 1)
Given: △ABC & △PQR
AD is the median of △ABC
PM is the median of △PQR
PQAB=PRAC=PMAD→1
To prove: △ABC∼△PQR
Proof:Let us extend AD to point D such that that AD=DE and PM upto point L such that PM=ML
Join B to E, C to E, & Q to L and R to L
(Image 2)
We know that medians is the bisector of opposite side
Hence BD=DC & AD=DE *By construction)
Hence in quadrilateral ABEC, diagonals AE and BC bisect each other at point D
∴ABEC is a parallelogram
∴AC=BE & AB=EC (opposite sides of a parallelogram are equal) →2
Similarly we can prove that
PQLR is a parallelogram.
PR=QL,PQ=LR (opposite sides of a parallelogram are equal) →3
Given that
PQAB=PRAC=PMAD (frim 1)
⇒PQAB=QLBE=PMAD (from 2 and 3)
⇒PQAB=QLBE=2PM2A