Mathematics
The value of x + y + z + r is:
180°
270°
360°
720°
Geometrical Shapes
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Answer
According to the properties of a polygon, the sum of all exterior angles is always 360°.
This is clearly shown in the figure, where x, y, z, and r represent the exterior angles of the polygon.
Thus, x + y + z + r = 360°.
Hence, option 3 is the correct option.
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