Concept information
Preferred term
intercept theorem
Definition(s)
-
The intercept theorem, also known as Thales's theorem, basic proportionality theorem or side splitter theorem is an important theorem in elementary geometry about the ratios of various line segments that are created if two rays with a common starting point are intercepted by a pair of parallels. It is equivalent to the theorem about ratios in similar triangles. It is traditionally attributed to Greek mathematician Thales. It was known to the ancient Babylonians and Egyptians, although its first known proof appears in Euclid's Elements.
(Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/Intercept_theorem)
Broader concept(s)
Synonym(s)
- basic proportionality theorem
- side splitter theorem
- Thales's theorem
In other languages
-
French
URI
http://data.loterre.fr/ark:/67375/PSR-QCTHGGFV-2
{{label}}
{{#each values }} {{! loop through ConceptPropertyValue objects }}
{{#if prefLabel }}
{{/if}}
{{/each}}
{{#if notation }}{{ notation }} {{/if}}{{ prefLabel }}
{{#ifDifferentLabelLang lang }} ({{ lang }}){{/ifDifferentLabelLang}}
{{#if vocabName }}
{{ vocabName }}
{{/if}}