11/14/2023 0 Comments A rectangle shapeYou now have the two sides of the rectangle. Use the straightedge to connect that 90° mark and the endpoint of the line segment. Align your protractor with that line segment, working at one endpoint at a time.Īt each end of the line segment, exactly at the endpoint, mark a 90° angle. Use the ruler or straightedge to make a straight line segment on a piece of paper, roughly in the lower third of the sheet. A straightedge (or ruler) makes straight lines. How to construct a rectangleĪ protractor measures angles. Congruent means they have the same length parallel means they are the same distance apart throughout their length.Ī rectangle has no restrictions on the lengths of its two pairs of sides you can have a very long, low rectangle, or a very fat rectangle, or a rectangle with four equal-length sides (that's a square). The other property that identifies rectangles is that opposite sides are congruent and parallel. When you do that, the four sides will automatically create the other identifying property. You cannot construct a rectangle without those four angles adding to 360° and each measuring 90°. The main identifying property of a rectangle is its four interior right angles. Later we will see how to draw a rectangle using a protractor, straightedge (or ruler), and pencil. Adjacent sides of a rectangle are perpendicular. When all four ends are touching, you may need to adjust to make sure all four inside angles look like right angles, or 90°. Arrange them so the longer pieces are parallel and exactly a distance apart so the other two, shorter pieces can touch their ends. Make certain two of the objects are the same length, and the other two objects are the same length. You can use four linear (straight) objects to make a rectangle. Their right angles make sure built things (houses, office buildings, schools) stand straight and tall. Rectangles are great because they stack neatly, since they have two pairs of parallel sides. You see them in bricks, cement blocks, picture frames, posters, sheets of paper, the faces of play bricks that snap together, the sides of shoe boxes and cereal boxes, and a lot of other everyday objects. Rectangles are very handy to have around. While a rectangle is a type of quadrilateral, parallelogram, closed shape and plane figure, only a square is always a type of rectangle. What is a Rectangle Definition Is a rectangle a parallelogram or rhombus?Ī parallelogram and rhombus can only be rectangles when their interior angles are each 90°. The base and top will be equal in length, and the left and right sides will be equal in length. The four sides of your polygon, to create two pairs of parallel sides, must also be two congruent pairs.
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