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Μαθηματικά και Αξιολόγηση ACT - Γεωμετρία

Εδώ θα μάθετε μερικές αγγλικές λέξεις που σχετίζονται με τη γεωμετρία, όπως "tangent", "vertex", "ellipse" κ.λπ. που θα σας βοηθήσουν να κάνετε άσσο στα ACT σας.

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ACT Vocabulary for Math and Assessment
slope

the measure of how steep a line is, found by dividing the change in height by the change in horizontal distance

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arc

(geometry) a part of a circle, which is curved

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radian

a unit for measuring angles, defined by the angle made when the radius of a circle is laid along its edge

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radius

the length of a straight line drawn from the center of a circle to any point on its outer boundary

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diameter

a straight line from one side of a round object, particularly a circle, passing through the center and joining the other side

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perimeter

the total length of the external boundary of something

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circumference

(geometry) the length of the external boundary of a curved shape, especially a circle

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area

the measurement of a piece of land or a flat surface

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volume

the amount of space that a substance or object takes or the amount of space inside an object

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angle

the space between two lines or surfaces that are joined, measured in degrees or radians

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right angle

an angle measuring exactly 90 degrees

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vertical angle

one of a pair of opposite angles made by two intersecting lines, which are always equal

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interior angle

an angle formed between two sides of a polygon that lies inside the shape

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acute angle

an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)

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consecutive angle

pairs of angles that share a common side and vertex in a polygon or between intersecting lines

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obtuse

(of angle) greater than 90 degrees but less than 180 degrees

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protractor

a measuring instrument used to measure and draw angles

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perpendicular

(of lines or planes) intersecting each other at a 90 degree angle

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polygon

(geometry) a flat shape consisting of three or more straight sides

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parallelogram

(geometry) any flat shape with four straight sides, the opposite sides of which are equal and parallel to each other

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tetrahedral

characterized by or resembling a tetrahedron, which has four triangular faces

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trapezoid

(geometry) a flat shape with four flat sides, two of which are parallel

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pentagon

a geometric shape with five angles and five straight sides

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quadrilateral

(geometry) a flat figure with four straight sides and four angles

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rhombus

(geometry) a flat shape with four equal sides in which opposite angles are equal

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epicycle

a small circle whose center moves around the circumference of a larger circle

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hyperbola

a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches

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parabola

(geometry) a symmetrical open curve that is similar to the path of an object thrown into the air passes till it falls back to earth

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ellipse

(geometry) a closed plane curve that has two focal points

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right triangle

a flat geometric shape consisting of three straight sides and one right angle

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acute triangle

a triangle in which all three interior angles are less than 90 degrees

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equilateral triangle

a type of triangle with all three sides of equal length

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scalene triangle

a type of triangle that has all three sides of different lengths

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isosceles

describing a triangle with at least two sides of equal length

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hypotenuse

the longest side of a right-angled triangle, opposite the right angle, and defined as the side opposite the right angle in a right-angled triangle

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right circular cylinder

a three-dimensional geometric shape with two parallel circular bases connected by a curved surface at a right angle to the bases

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rectangular pyramid

a three-dimensional geometric shape that has a rectangular base and four triangular faces that meet at a single point called the apex

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asymmetry

(geometry) a lack of symmetry or equivalence in shape or size between the two sides or parts of something

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vertex

a point where two or more lines, edges, or rays meet to form an angle, or the point at which the sides of a polygon intersect

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diagonal

(geometry) a straight line that joins the opposite corners of a flat shape at an angle

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congruent

(in geometry) describing shapes of the same size and form

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base

the side of a geometric shape, usually the one considered as the bottom, from which the height is measured

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parallel

(mathematics) any of the pair of geometric figures such as lines or planes which do not meet or intersect

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line of symmetry

a line that divides a shape into two congruent parts

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geometric series

a series of numbers in which each term after the first is found by multiplying the previous term by a fixed, non-zero number

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surface area

the total area that the surface of a three-dimensional object occupies

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transversal

(of a line) intersecting two or more other lines at different points

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quadrant

one-fourth of a circle, formed by two perpendicular radii and the connecting arc

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asymptote

a straight line that a curve approaches indefinitely but never intersects, characterizing the limiting behavior of the curve

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to bisect

to divide something into two equal parts

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tangent

a straight line that touches a curve or surface at exactly one point, known as the point of tangency

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chord

a straight line segment that connects two points on the edge of a circle

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to translate

(geometry) to move a shape or figure from one position to another without rotating, resizing, or otherwise altering its shape

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