Question

(i) Find the magnitude of an interior angle of a regular quadrilateral.
quadrilateral are equal. If the fourth angle is 120°, find the
(ii) Three annles of a​

Answer 1

Answer:

It is given that three angles are equal and measure of fourth angle is 120

o

.

Let the measure of each of the equal angles be x

We know that, sum of four measure of angles of quadrilateral is 360

.

⇒ x+x+x+120

=360

⇒ 3x+120

=360

⇒ 3x=240

⇒ x=80

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