LMNP is a square determine angle PNL
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angle PNL is 90 because in a square all angle is 90
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firstly draw the square LMNP
then join LN
now
In ∆ PNL,
PL= PN so
angle PNL = angle PLN
and angle p is = 90°
by angle sum property,
angle P + angle PNL + angle PLN = 180°
90° + 2( angle PNL) =180°
angle PNL=(180° - 90°)/2 = 90°/2= 45°
then join LN
now
In ∆ PNL,
PL= PN so
angle PNL = angle PLN
and angle p is = 90°
by angle sum property,
angle P + angle PNL + angle PLN = 180°
90° + 2( angle PNL) =180°
angle PNL=(180° - 90°)/2 = 90°/2= 45°
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