Answer required. please. it belongs to maths section
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Given Q and R are the mid points of sides AB and BC of ∆ABC respectively
∴ QR||AC [Mid-point theorem]
Given BE⊥AC
∴ BE⊥QR
In ∆ABH and Q and P are the mid points of sides AB and AH respectively.
∴ QP||BH [Mid-point theorem]
∴QP||BE
⇒QP⊥QR (BE⊥QR)
⇒∠PQR = 90°
∴ QR||AC [Mid-point theorem]
Given BE⊥AC
∴ BE⊥QR
In ∆ABH and Q and P are the mid points of sides AB and AH respectively.
∴ QP||BH [Mid-point theorem]
∴QP||BE
⇒QP⊥QR (BE⊥QR)
⇒∠PQR = 90°
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