Attributes  Values 

rdf:type
 
rdfs:label
 
rdfs:comment
  A trioval is a shape which derives its name from the two other shapes it most resembles, a triangle and an oval. Rather than meeting at sharp, definable angles as the sides of a triangle do, in a trioval these angles are instead rounded into smooth curves. While an oval has four turns, a trioval has six. More formally, according to the fourvertex theorem, every smooth simple closed curve has at least four vertices, points where its curvature reaches a local minimum or maximum. In a trioval, there are six such points, alternating between three minima and three maxima.
 三椭圆形（Trioval）是从两个形状（三角形和椭圆形）混合而成的。和三角形比較，三椭圆形没有角，三椭圆形把三角形的三个角各自换成曲线。 相对于椭圆形的四个转弯，三椭圆形则有六个转弯。根据四頂點定理，每个簡單閉曲線至少有四个顶点（其曲率达到局部最小值或是最大值的點）。在三椭圆形中，有六个顶点，會是三个局部最小点和三个局部最大点，輪流交错出現。

foaf:depiction
 
foaf:isPrimaryTopicOf
 
thumbnail
 
dct:subject
 
Wikipage page ID
 
Wikipage revision ID
 
sameAs
 
dbp:wikiPageUsesTemplate
 
has abstract
  A trioval is a shape which derives its name from the two other shapes it most resembles, a triangle and an oval. Rather than meeting at sharp, definable angles as the sides of a triangle do, in a trioval these angles are instead rounded into smooth curves. While an oval has four turns, a trioval has six. More formally, according to the fourvertex theorem, every smooth simple closed curve has at least four vertices, points where its curvature reaches a local minimum or maximum. In a trioval, there are six such points, alternating between three minima and three maxima.
 三椭圆形（Trioval）是从两个形状（三角形和椭圆形）混合而成的。和三角形比較，三椭圆形没有角，三椭圆形把三角形的三个角各自换成曲线。 相对于椭圆形的四个转弯，三椭圆形则有六个转弯。根据四頂點定理，每个簡單閉曲線至少有四个顶点（其曲率达到局部最小值或是最大值的點）。在三椭圆形中，有六个顶点，會是三个局部最小点和三个局部最大点，輪流交错出現。

prov:wasDerivedFrom
 
page length (characters) of wiki page
 
is foaf:primaryTopic
of  
is Wikipage redirect
of  
is CourseType
of  
is Layout
of  