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Why do people use right angles in their career?
Angles are used in designing and creating structurally sound buildings. It would be pointless if you had a flat roof, wouldn't it?
Why are walls built at right angles to the ground?
Easiest that way to get them to carry their own weight, and the weight of the roof.
What has only one line of symmetry two sets of equal sides and only one set of matching angles?
An irregular pentagon such as a child's silhouette of a house: a rectangle shape (open at the top) forming the body of the house, with a triangular roof on of the rectangle. The vertical line through the apex of the roof is the line of symmetry. The two walls, and the two roof lines are the two sets of equal sides. The two right angles at the base are the one set of matching angles.
What poygon has 5 sides and 2 right angles?
It is an irregular pentagon - a bit like a child's silhouette of a house with a pitched roof.
A pentagon has how many angles and parallel sides?
A regular pentagon has 5 equal endless and no equal sides. However if you draw a pentagon like simple house with a square below and a trainable on top for the roof, then you get one pair of parallel sides (the walls) but it will always have 5 angles.
