ACT 수학 및 평가 - Geometry

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

경사

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

호

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

라디안

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

반지름

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

지름

the total length of the external boundary of something

둘레

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

둘레

the measurement of a piece of land or a flat surface

면적

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

부피

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

각도

an angle measuring exactly 90 degrees

직각

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

수직각

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

내각

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

예각

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

연속 각

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

둔각

a measuring instrument used to measure and draw angles

각도기

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

수직의

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

다각형

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

평행사변형

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

사면체의

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

사다리꼴

a geometric shape with five angles and five straight sides

오각형

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

사각형

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

마름모

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

에피사이클

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

쌍곡선

(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

포물선

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

타원

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

직각삼각형

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

예각 삼각형

a type of triangle with all three sides of equal length

정삼각형

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

부등변 삼각형

describing a triangle with at least two sides of equal length

이등변

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

빗변

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

직선 원기둥

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

직사각형 피라미드

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

비대칭

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

정점

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

대각선

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

합동하는

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

밑변

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

평행선

a line that divides a shape into two congruent parts

대칭선

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

등비 수열

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

표면적

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

가로지르는

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

사분면

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

점점선

to divide something into two equal parts

이등분하다

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

접선

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

현

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

이동하다