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nicolebastidas
10.01.2020 •
Mathematics
What is the sum of the interior angles, each interior angle, the central angle, and each exterior angle of a pentagon, a hexagon, an octogon, a nonagon, a decagon and a dodecagon.
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Ответ:
-Pentagon: 540°
-Hexagon: 720°
-Octagon: 900°
-Nonagon: 1260°
-Decagon: 1440°
-Dodecagon: 1800°
Each interior Angle: Formula: [(n-2)*180] / n
-Pentagon: 108°
-Hexagon: 120°
-Octagon: 135°
-Nonagon: 140°
-Decagon: 144°
-Dodecagon: 150°
The sum of the exterior angles of each polygon stated above is equal to 360 degrees. Using the formula: (180-interior angle) * n
The central angle is formed by making a circle in the middle and divide it by the number of sides. Therefore, CA = 360 /n
-Pentagon: 72°
-Hexagon: 60°
-Octagon: 45°
-Nonagon: 40°
-Decagon: 36°
-Dodecagon: 30°
Ответ:
Step-by-step explanation:
[8/63] + [ 4/15 ]
= (120 + 652)/945
= 0.82