write any three Properties of Quadrilateral and also find the fourth angle of a quadrilateral if three angles of quadrilateral are 75 degree 90 degree and 75 degree
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The sum of four angles of quadrilateral = 360 °
angle 1 + 2 + 3 + 4 = 360°
75° + 90° + 75° + x = 360°
240 + x = 360°
x = 360 - 240
x = 120 °
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120°
Step-by-step explanation:
Properties
- Quadrilateral has 4 sides
- It has 4 vertices and 4 angles
- Sum of the 4 angles will be equal to 360°
4th angle
Let the 4th angle be ' x '
From 3rd point,
=> 75 + 90 + 75 + x = 360
=> 240 + x = 360
=> x = 360 - 240
=> x = 120
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