![]() Lasers are excellent examples of rays because unlike sports balls, they are not much affected by earth's gravity, so they shine in steady, straight one-way lines from their source. The path an arrow travels from a bow is a ray and has the added benefit of being, well, arrow-shaped. The light beam from a classroom LCD projector is a ray so is light from a movie projector at your local cinema. Tennis pro, Rafael Nadal, famously serves tennis balls at some 217 kph (135 mph), which defies gravity's tug so well it seems to travel in a straight line, just like a ray. It originates at our star, the Sun, and travels one way, striking earth some eight minutes after it left its "endpoint," the Sun. Ray in geometry examplesĪ ray of sunshine is a ray. He is the endpoint the traveling football is the one-way line. Gravity tugs the football down, but the quarterbacks' arm speed and strength can make short passes look like straight-line rays. This is the symbol for Ray , named after an NFL quarterback, who can throw a football that very nearly moves like a ray. Then, we write the endpoint and other point together as capital letters, capped by a tiny, one-way arrow (pointing to the right), : Ray symbol We also need some other point along the one-way line. To symbolize and label a ray, we need that endpoint identified. Draw one arrowhead on the open end of your line (the one opposite the endpoint). Use a straightedge to draw a line starting at your endpoint and continuing through your second point. To draw a ray, place two points on a piece of paper. Ray definition in geometry How to draw a ray ![]() Rays and real-life examples of rays are all around is. You have just modeled a ray, a plane figure in geometry that has one endpoint but continues in the other direction forever. Go into a dark room and turn the flashlight on.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |