The dimensions of the angles in a quadrilateral are 3A, 4A, 5A, and 6A. What is its largest angle?
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Step-by-step explanation:
The angle sum of a quadrilateral is 360°
3A+4A+5A+6A = 360°
7A+11A = 360°
18A = 360°
A = 360°/18
A = 20°
3A = 3×20° = 60°
4A = 4×20° = 80°
5A = 5×20° = 100°
6A = 6×20° = 120°
Largest angle is 120°
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