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# What are two rays with a common endpoint?

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Two rays that have a common endpoint form an angle. In this formed angle, the endpoint is known as the vertex while the rays are its sides.

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There are different ways to name an angle. Students can use the three points like E, F, and G, where E and G are points on each ray and F is the vertex point. Three ways of naming this angle are: angle EFG, angle F, or angle GFE.

There are many different angles formed from two rays and a vertex point, such as a right, acute, obtuse, or straight angle. While an obtuse angle is greater than 90 degrees, an acute angle is less than 90 degrees. A straight angle is a line that has 180 degrees.

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## Related Questions

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For each vector, the angle of the vector to the horizontal must be determined. Using this angle, the vectors can be split into their horizontal and vertical components using the trigonometric functions sine and cosine. The horizontal components for the vectors are solved separately from the vertical. The combined horizontal and vertical components are solved using the Pythagorean theorem to reach the final answer.

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The common endpoint of the sides of an angle is called a vertex. For example, triangles have three vertices, while squares have four. These common endpoints are often colloquially called corner points, though this may result in confusing them with angles.

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A ray that divides an angle into two congruent angles is called an angle bisector. The straight line cuts an angle in half, creating two equal angles.