The total interior angles of a square (or rectangle) = 360°
Each time we add a side (triangle to square, square to pentagon, pentagon to hexagon), we add another 180°. Triangle to square `=180°+180°=360°`
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1 |
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2 |
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3 |
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4 |
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`90°` |
`+` |
`90°` |
`+` |
`90°` |
`+` |
`90°` |
`=` |
`360°` |
The total internal angles of a square = 360°
