alleryAdding all four corner angles of a convex four-sided shape gives how many degrees?
A180°
B540°
C270°
D360°
Answer & Solution
Correct answer: D. 360°
1. A simple convex quadrilateral has four interior angles.
2. Together they make one full turn, 360°.
3. 180° is the total for a triangle and 540° for a five-sided shape.
_Source: Wikipedia, Angle, Polygon-related angles_
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