Question

prove that sum of exterior angle of quadrilateral is 360​

Answer 1

Answer:

Let sum of all exterior angles be 'E', and sum of all interior angles be 'I'. E = n × 180° - (n -2) × 180°. Hence, The sum of all the exterior angles of a polygon is 360° .

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Answer 2

the sum of angles of triangle《A+《B+《C=180degree

so according to triangle there ate 3 sides in triangle =180

now quadrilateral it has 4 angles

=《A+《B +《C+《D

=360degrees

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