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There isn't any. Dilations do not affect angles.
The addition of an extra side increases the total of the internal angles by 180° The sum of the internal angles of a polygon = (number of sides - 2) × 180°
Nothing. Translation does not affect the measure of sides (or angles).
If all side lengths are changed so the new shape is proportionately equal, the angles don't change. But if it's not proportion. equal, then the angles will be different
To determine the tension in each chain supporting a weight of 900N, we can use trigonometry based on the lengths of the chains and the vertical weight they support. Let's denote the tension in the 4m chain as T1 and in the 3m chain as T2. Assuming the chains are at angles θ1 and θ2 with the vertical, we can set up the equations using the vertical components of the tensions: T1 * cos(θ1) + T2 * cos(θ2) = 900N. The specific angles would be needed to calculate the exact tensions.