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Vocabulary of Instruction: Geometry

Vocabulary of Instruction: Geometry . Grade 4. Parallel Lines/ Líneas paralelas. Definition : Parallel lines remain the same distance apart over their entire length. No matter how far you extend them, they will never meet .

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Vocabulary of Instruction: Geometry

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  1. Vocabulary of Instruction: Geometry Grade 4

  2. Parallel Lines/Líneasparalelas • Definition: Parallel lines remain the same distance apart over their entire length. No matter how far you extend them, they will never meet. • Definición: Dos líneas son paralelascuando se mantienen a la mismadistancia y nunca se encuentran.

  3. Perprendicular lines/Líneasperpendiculares • Definition: A line is perpendicular to another if it meets or crosses it at right angles (90°). • Definición: Líneasque se encuentran en ángulos rectos (90°).

  4. Symmetry/Simetría • Definition: Symmetry is when one shape becomes exactly like another if you flip, slide or turn it. • Definición: Simetríaescuandounafigura se vuelveexactamenteigualqueotrasi la volteas o la giras.

  5. Line of Symmetry/Línea de simetría • Definition: The imaginary line where you could fold the image and have both halves match exactly. • Definición: La línea de simetríade unafiguraesunalíneaque divide la figura en dos partescongruentesque son unaimagenespejouna de otra.

  6. Congruent Figures/FigurasCongruentes • Definition: Figures that have the same shape and size. • Definición: Tienen la misma forma y el mismotamaño.

  7. Similar Figures/Figurassimilares • Definition: Two shapes/figures are Similar if the only difference is size (and possibly the need to turn or flip one around). • Definición: En geometría, dos figuras son similaressi la únicadiferenciaes el tamaño (y a lo mejorgirar o voltearuna de ellas).

  8. Reflection/Reflexión • Definition: An image or shape as it would be seen in a mirror, or in a smooth lake. • Definición: Unareflexiónes un volteo con respecto a unalínea.

  9. Rotation/Rotación • Definition: Turning around a center. The distance from the center to any point on the shape stays the same. Every point makes a circle around the center. • Definición: Giraralrededor de un centro. La distanciadel centroa cualquierpunto de la figuraes la misma. Cadapuntosigue un círculoalrededor del centro.

  10. Translation/Translación • Definition: Moving without rotating, resizing or anything else, just moving. Every point of the shape must move in the same distance and in the same direction. • Definición: Movimiento de unafigura, sin rotarlanivoltearla. "Deslizar". La figurasigueviéndoseexactamenteigual, solo que en un lugardiferente.

  11. Right angle/Ángulo recto • Definition: An angle which is equal to 90°, one quarter of a full revolution. • Definición: Un ángulo recto es un ánguloquemideexactamente 90°.

  12. Acute Angle/Ánguloagudo • Definition: An angle whose measure is less than 90°. • Definición: Un ángulo de menos de 90°.

  13. Obtuse angle/Ánguloobtuso • Definition: An angle that is greater than 90° but less than 180°. • Definición: Un ánguloquemidemás de 90° peromenos de 180°.

  14. Ray/RAyo • Definition: A ray is a line that starts at a given point and goes off forever in some direction. • Definición: Un rayoesunalínea con punto de iniciopero sin punto final (vahacia el infinito).

  15. Plane/Plano • Definition: The plane has two dimensions: length and width. But since the plane is infinitely large, the length and width cannot be measured. • Definición: Un planoesunasuperficieplana sin espesorque se extiendehacia el infinito.

  16. Vertex/vértice • Definition: A point where two or more straight lines meet. A corner. • Definición: Un puntodonde dos o máslíneas se encuentran. Unaesquina.

  17. Polygon/Polígono • Definition: Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is "closed" (all the lines connect up). • Definición: Unafiguraplana (bidimensional) con lados rectos. Ejemplos: triángulos, rectángulos y pentágonos.

  18. Rectangle/Rectángulo • Definition: A four-sided polygon (a flat shape with straight sides) where every angle is a right angle (90°). Opposite sides are parallel and of equal length. • Definición: Un rectánguloes un polígono de 4 lados (unafiguraplana de lados rectos) en dondecadaánguloes un ángulo recto (90°). Los ladosopuestos son paralelos y de iguallongitud.

  19. Pentagon/Pentágono • Definition: A 5-sided polygon (a flat shape with straight sides). • Definición: Un polígono de 5 lados (unafiguraplana de lados rectos).

  20. Triangle/Triángulo • Definition: A triangle is a figure that has three sides and three angles. The three angles always add to 180°. • Definición: Un triángulotienetreslados y tresángulos. Los tresángulossiempresuman 180°.

  21. Octagon/Octágono • Definition: An 8-sided polygon (a flat shape with straight sides). • Definición: Un polígono de 8 lados (unafiguraplana de lados rectos).

  22. Three-dimensional figure/figurastridimensionales • Definition: Three-dimensional figures are those figures that do not lie in a plane. The dimensions of three-dimensional figures are length, width, and height. • Definición: Las figurastridimensionales se llamansólidos. Los sólidostienentresdimensiones: longitud, profundidad y altura.

  23. Cube/Cubo • Definition: A cube is a box-shaped solid object that has six identical square faces. • Definición: Un cuboes un objetosólido en forma de cajaquetieneseiscarascuadradasidénticas.

  24. Cone/Cono • Definition: A solid (3-dimensional) object that has a circular base and one vertex. • Definición: Un objetosólido (tri-dimensional) quetieneuna base circular y un solo un vértice.

  25. Sphere/ESfera • Definition: A3-dimensional object shaped like a ball.Every point on the surface is the same distance from the center. • Definición: Un objeto tridimensional con la forma de unapelota. Todos los puntos de susuperficieestán a la mismadistancia del centro.

  26. Quadrilaterals/cuadriláteros • Definition: Any four-sided shape is a quadrilateral but the sides have to be straight, and it has to be 2-dimensional. • Definición: Las figuras de cuatrolados se llamancuadriláterosperolos ladostienenqueser rectos, y la figuratienequeserbidimensional.

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