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A square has equal sides (marked "s") and every angle is a right angle (90°) Also opposite sides are parallel. A square also fits the definition of a rectangle (all angles are 90°), and a rhombus (all sides are equal length).
What Are Sides of Equal Length? Sides of equal length mean that they measure the same. In simple words, the sides of a shape that have the same length are the sides of equal length. Sides that are equal in length are also known as congruent sides. These sides could be part of one single shape or different shapes.
The corresponding angles of similar figures are equal, and their side lengths are in proportion. This means that their side length ratios are equal. For example, consider two similar triangles. The ratio of their corresponding side lengths remains constant regardless of the size of the triangles.
The 45°-45°-90° triangle, also referred to as an isosceles right triangle, since it has two sides of equal lengths, is a right triangle in which the sides corresponding to the angles, 45°-45°-90°, follow a ratio of 1:1:√ 2. Like the 30°-60°-90° triangle, knowing one side length allows you to determine the lengths of the other sides ...
There are three special names given to triangles that tell how many sides (or angles) are equal. There can be 3, 2 or no equal sides/angles: How to remember? Alphabetically they go 3, 2, none: Equilateral: "equal" -lateral (lateral means side) so they have all equal sides. Isosceles: means "equal legs", and we have two legs, right?
You can use this expression to calculate a side length or angle in a triangle if you know the opposite angle and another angle and side length. For example, let’s calculate the length of side b for a triangle having an angle α equal to 45°, an angle β equal to 75°, and a side a equal to 10.
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Equal lengths are shown on the diagram by hash marks annotated on each side. The opposite sides are parallel, meaning the square has two pairs of parallel sides.