similar12 videos
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相似Shortcuts
Geometry相似
How to determine if two triangles are similar using a shortcut.
similar triangles AA SAS SSS proportion congruence -
相似and Area Ratios
Geometry相似
How to convert between length and area ratios of similar polygons
多边形 similar area ratios -
Properties of Similar Polygons
Geometry相似
How to identify if two figures are similar.
similar figures corresponding angles congruence corresponding sides proportional -
Corresponding Parts of Similar Triangles
Geometry相似
如何联系corresponding altitudes, medians and angle bisectors in similar triangles.
similar triangles altitude median angle bisector proportional -
相似and Volume Ratios
Geometry相似
How to identify if two solids are similar and how to convert 1D ratios to surface area and volume ratios.
similarity volume ratios surface area -
Similar Triangles in Circles and Right Triangles
Geometry相似
How to determine if two triangles in a circle are similar and how to prove that three similar triangles exist in a right triangle with an altitude.
similar inscribed angles intercepted arc right angle circle -
Similar Triangles
Pre-AlgebraIntroductory Geometry
Overview of similarity: congruent angles, proportional corresponding sides
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Indirect Measurement
Geometry相似
How to use similar triangles to measure the height of objects.
indirect measurement similar triangles measurement -
Proportional Segments Between Parallel Lines
Geometry相似
How to prove two triangles are similar using a line parallel to a base.
parallel lines triangles similar triangles proportion -
Convergent Evolution
BiologyEvolution
How unrelated species acquire similar traits.
convergent evolution -
Dilations
GeometryTransformations
How to perform and describe a dilation.
dilation transformation isometry similar figures enlarge reduce scale factor center of dilation