TriangleMeasurement

TriangleMeasurement[tri,type]

给出三角形 tri 指定类型的度量.

更多信息

  • 可用 {p1,p2,p3}Triangle[{p1,p2,p3}]Polygon[{p1,p2,p3}] 给出三角形 tri.
  • 可以给出以下度量类型:
  • "Area"面积
    "Circumradius"外接圆的半径
    {"Exradius",p}顶点 p 所对的旁接圆的半径
    {"ExteriorAngle",p}顶点 p 处的外角
    {"FullExteriorAngle",p}顶点 p 处的全外角 (full exterior angle)
    {"Height",p}从顶点 p 测得的三角形的高
    "Inradius"内切圆的半径
    {"InteriorAngle",p}顶点 p 的内角
    "NinePointRadius"九点圆的半径
    "Perimeter"周长
    "Semiperimeter"半周长
  • 在格式 {"type",p} 中,p 可以是 GeometricScene 中的符号点规范,或者是格式 {x,y}Point[{x,y}] 或顶点的指数 i 的明确点. 当给定短格式 "type",则使用 p2.
  • 在指定顶点 p 的任何形式中,All 值会返回对应顶点的三个值列表.
  • TriangleMeasurement 可与符号点一起在 GeometricScene 中使用.

范例

打开所有单元关闭所有单元

基本范例  (2)

计算三角形的半周长:

计算三角形指定顶点处旁切圆的半径:

计算所有旁切圆的半径:

范围  (11)

计算三角形的面积:

用符号坐标计算面积:

计算三角形外接圆的半径:

计算三角形指定顶点处旁切圆的半径:

计算三角形指定顶点处的外角:

计算三角形指定顶点处的全外角:

计算三角形的高:

计算三角形内切圆的半径:

计算三角形指定顶点处的内角:

计算三角形九点圆的圆心:

计算三角形的周长:

计算三角形的半周长:

属性和关系  (11)

TriangleMeasurement[{a,b,c},"Area"] 等价于 Area[Triangle[{a,b,c}]]

TriangleConstruct[{a,b,c},"Circumcircle"] 等价于 Circle[TriangleCenter[{a,b,c},"Circumcenter"],TriangleMeasurement[{a,b,c},"Circumradius"]]

TriangleConstruct[{a,b,c},"Excircle"] 等价于 Circle[TriangleCenter[{a,b,c},"Excenter"],TriangleMeasurement[{a,b,c},"Exradius"]]

TriangleConstruct[{a,b,c},"ExteriorAngle"] 等价于 PlanarAngle[{a,b,c},"Exterior"]

TriangleConstruct[{a,b,c},"FullExteriorAngle"] 等价于 PlanarAngle[{a,b,c},"FullExterior"]

TriangleMeasurement[{a,b,c},"Height"] 等价于 ArcLength[TriangleConstruct[{a,b,c},"Altitude"]]

TriangleConstruct[{a,b,c},"Incircle"] 等价于 Circle[TriangleCenter[{a,b,c},"Incenter"],TriangleMeasurement[{a,b,c},"Inradius"]]

TriangleConstruct[{a,b,c},"InteriorAngle"] 等价于 PlanarAngle[{a,b,c},"Interior"]

TriangleConstruct[{a,b,c},"NinePointCircle"] 等价于 Circle[TriangleCenter[{a,b,c},"NinePointCenter"],TriangleMeasurement[{a,b,c},"NinePointRadius"]]

TriangleConstruct[{a,b,c},"Perimeter"] 等价于 Perimeter[Triangle[{a,b,c}]]

TriangleConstruct[{a,b,c},"Semiperimeter"] 等价于 Perimeter[Triangle[{a,b,c}]]/2

Wolfram Research (2019),TriangleMeasurement,Wolfram 语言函数,https://reference.wolfram.com/language/ref/TriangleMeasurement.html.

文本

Wolfram Research (2019),TriangleMeasurement,Wolfram 语言函数,https://reference.wolfram.com/language/ref/TriangleMeasurement.html.

CMS

Wolfram 语言. 2019. "TriangleMeasurement." Wolfram 语言与系统参考资料中心. Wolfram Research. https://reference.wolfram.com/language/ref/TriangleMeasurement.html.

APA

Wolfram 语言. (2019). TriangleMeasurement. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/TriangleMeasurement.html 年

BibTeX

@misc{reference.wolfram_2024_trianglemeasurement, author="Wolfram Research", title="{TriangleMeasurement}", year="2019", howpublished="\url{https://reference.wolfram.com/language/ref/TriangleMeasurement.html}", note=[Accessed: 17-November-2024 ]}

BibLaTeX

@online{reference.wolfram_2024_trianglemeasurement, organization={Wolfram Research}, title={TriangleMeasurement}, year={2019}, url={https://reference.wolfram.com/language/ref/TriangleMeasurement.html}, note=[Accessed: 17-November-2024 ]}