Q. 243.8( 15 Votes )
PQRSTU is a regular hexagon, Determine each angle of ΔPQT.
Answer :
The sum of interior angles of a polygon = (n – 2) × 180°
The sum of interior angles of a hexagon = (6 – 2) × 180° = 4 × 180° = 720°
Measure of each angle of hexagon = 
Proved above
In Δ PUT
[Angle sum property of a triangle]
[Since ΔPUT is isosceles triangle]
Similarly 
Therefore 
[Using angle sum property of triangle in ΔPQT]
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