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Barvy a Tvary - Čáry, úhly a křivky
Přečtěte si tuto lekci a naučte se názvy některých čar, úhlů a křivek v angličtině, například „ray“, „acute angle“ a „arc“.
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Kvíz
an imaginary line in the middle of an object around which the object revolves
osa
(geometry) an arbitrary straight line that passes through the center of a symmetrical object or around which an object spins
osa
a mark or an object formed by two short lines or pieces crossing each other
kříž
(geometry) a straight line that joins the opposite corners of a flat shape at an angle
diagonála
(geometry) a shape that consists of a line alternating its direction to left and right
zákruta
a straight line that is terminated by a secondary line at each end, resembling the letter H
balbis
a straight line with one endpoint that extends infinitely in the other direction
paprsek
a portion of a straight line that is defined by two distinct endpoints
úsečka
(mathematics) any of the pair of geometric figures such as lines or planes which do not meet or intersect
paralela
a line, segment, or structure that meets another at a right angle, creating a 90-degree intersection
kolmice
a straight line that touches a curve or surface at exactly one point, known as the point of tangency
tečna
a line that intersects a circle at two distinct points
sekant
a pair of adjacent angles formed by two intersecting lines, which add up to 180 degrees
lineární pár
an angle that measures between 0 and 90 degrees, which is less than a right angle (90 degrees)
ostrý úhel
an angle that measures more than 90 degrees but less than 180 degrees
tupý úhel
an angle that measures exactly 180 degrees, which is the same as a straight line
přímý úhel
an angle that measures either less or more that 90 degrees
šikmý úhel
an angle that measures greater than 180 degrees but less than 360 degrees
reflexní úhel
a complete revolution or turn around a fixed point or axis, covering a 360-degree angle
plná rotace
an angle measured counterclockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
kladný úhel
an angle measured clockwise from the initial side of a reference angle in standard position, usually expressed in degrees or radians
negativní úhel
two angles that share a common vertex and a common side, but do not overlap, and are not in a straight line
sousední úhly
the measure of the tilt between two lines or surfaces in two-dimensional space, typically given in degrees or radians
rovinný úhel
a shape, line or surface that is hollow and is rounded inward
konvexita
(geometry) a shape formed when a circular cone is intersected by a plane
kuželosečná křivka
a curved shape with narrow points at the ends that appears wider in the middle, like the shape of the moon in its first and last quarters
půlměsíc
(geometry) a curved shape or design that gradually winds around a center or axis
spirála
(geometry) a closed plane curve that has two focal points
elipsa
(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
parabola
a geometric curve formed by the intersection of a plane with two cones, resulting in two symmetrical branches
hyperbola
a continuous curve that does not intersect itself, and can be traced without lifting the pen or pencil from the paper
jednoduchá křivka
a curve that intersects itself, or has overlapping segments, requiring the pen or pencil to be lifted from the paper while tracing it
násobná křivka
a curve that does not intersect itself and has distinct endpoints, meaning it does not form a closed shape or loop
otevřená křivka
a curve that begins and ends at the same point, forming a closed loop
uzavřená křivka
