in the given figure, AB parallel to CD. then the value of x is
a)45°
b)60°
c)90°
d)105°
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Answer:
45 °
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Properties
The properties of polygons are based on its sides and angles.
The sum of all the interior angles of an n-sided polygon is (n – 2) × 180°.
The number of diagonals in a polygon with n sides = n(n – 3)/2
The number of triangles formed by joining the diagonals from one corner of a polygon = n – 2
The measure of each interior angle of n-sided regular polygon = [(n – 2) × 180°]/n
The measure of each exterior angle of an n-sided regular polygon = 360°/n ,
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