what is theorm no.2 in circle
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Step-by-step explanation:
Theorem 2
The lengths of tangents drawn from an external point to a circle are equal.
Construction: Draw a circle with centre O. From a point P outside the circle, draw two tangents P and R.
To Prove: PQ = PR
Proof: In Δ POQ and Δ POR
OQ=OR(radii)
PO=PO (common side)
∠PQO=∠PRO (Right angle)
ΔPOQ≅ΔPOR
Hence proved
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