# problemas con los ángulos entre rectas

nocsag2 shared this question 4 years ago

Buenas, lo que ocurre es que al momento de seleccionar las rectas donde busco adquirir el ángulo, me bota un resultado que no es, por ejemplo:

Seleccionando la opción de ángulo entre dos rectas, lo que busco es denotar los 120° que tiene la semirrecta V con respecto al eje X sin embargo, me arroja 300 grados. Algún error o configuración inadecuada? saludos

As Mathmagic says, the angle displayed depends on how you created the segment and also on the order of selection of the objects.

- create the segment clicking on O then on A -> you have segment OA now

- select the Angle tool

- click on the xAxis, then on the segment

You get the angle you wanted. Try different combinations (segment AO, clicking on objects in reverse order, etc...) to explore the meaning of directions in GeoGebra (and in geometry, and trig, etc... too )

You can also restrict the sets of values of an angle by right clicking on it and selecting the desired option in the Angle dropdown list.

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Please do not write the same things three times!

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what

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What was the command to measure the angle alpha? Did you use a tool?

With the tool I clicked on the x-Axis and the ray and it gave me the right angle-value.

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not to me

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el angulo entre segmentos o rectas se calcula a partir del vector direccion, cambia el orden de los puntos al crear el segmento y cambiará el angulo

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si le doy click primero al segmento y luego al eje X da:

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es raro porque en la aplicación web, funciona bien

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As Mathmagic says, the angle displayed depends on how you created the segment and also on the order of selection of the objects.

- create the segment clicking on O then on A -> you have segment OA now

- select the Angle tool

- click on the xAxis, then on the segment

You get the angle you wanted. Try different combinations (segment AO, clicking on objects in reverse order, etc...) to explore the meaning of directions in GeoGebra (and in geometry, and trig, etc... too )

You can also restrict the sets of values of an angle by right clicking on it and selecting the desired option in the Angle dropdown list.

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that works!, thank you