the three angles of a quadrilateral are 60dgrees, 80degrees and 120 degrees and find the 4th angle
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Answered by
8
Given :-
- First angle = 60°
- Second angle = 80°
- Third angle = 120°
To find :-
- The fourth angle
Answer :-
From the angle sum property of quadrilateral we know :
✪ First angle + Second angle + Third angle + Fourth angle = 360°
- Substituting the values we are given
=> 60° + 80° + 120° + Fourth angle = 360°
=> 140° + 120° + Fourth angle = 360°
=> 260° + Fourth angle = 360°
=> Fourth angle = 360° - 260°
=> Fourth angle = 100°
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Answered by
14
Given :-
- The three angles of quadrilateral are 60dgrees, 80degrees and 120 degrees.
To Find :
- The fourth angle
Solution :-
(As we know that sum of quadrilateral angles = 360°)
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Additional information
- All polygon with four sides is called a quadrilateral. The sum of the measure of the four angles is 360° degree.
NOTE: Please refer to the attachment!
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