Similar Triangles; If two shapes are similar, one is an enlargement of the other. This means that the two shapes will have the same angles and their sides will be in the same proportion (e.g. the sides of one triangle will all be 3 times the sides of the other etc.).
www.gcseguide.co.uk/similar_triangles.htm www.gcseguide.co.uk/similar_triangles.htm
Definition and properties of similar triangles - testing for similarity ... Definition: Triangles are similar if they have the same shape, but can be different sizes. (They are still similar even if one is rotated, or one is a mirror image of the other). ... Properties of Similar Triangles...
www.mathopenref.com/similartriangles.html www.mathopenref.com/similartriangles.html
Similar triangles have the following properties: ... We can tell whether two triangles are similar without testing all the sides and all the angles of the two triangles. There are two rules to check for similar triangles. They are called the AA rule and RAR rule.
www.onlinemathlearning.com/similar-triangles.html www.onlinemathlearning.com/similar-triangles.html
Similarity (geometry) - Wikipedia, the free encyclopedia
Two geometrical objects are called similar if they both have the same shape. More precisely, one is congruent to the result of a uniform scaling (enlarging or shrinking) of the other. Corresponding ...
en.wikipedia.org/wiki/Similarity_(geometry)
Before embarking on trigonometry, there are a couple of things you need to know well about geometry, namely the Pythagorean theorem and similar triangles. Both of these are used over and over in trigonometry.
www.clarku.edu/~djoyce/trig/geometry.html
When solving similar triangles, set up a proportion with the variable on top of one of the ratios and the other side of the same triangle on the bottom. Set up a ratio for the similar triangle with the corresponding sides in the same places:
www.mtsu.edu/~dotts/Smlrtrngls.html
Two triangles are similar if their corresponding angles are congruent and their corresponding sides are proportional. It is however not essential to prove all 3 angles of one triangle congruent to the other, or for that matter all three sides proportional to the other.
www.pinkmonkey.com/studyguides/subjects/geometry/chap5/... www.pinkmonkey.com/studyguides/subjects/geometry/chap5/g0505601.asp
In this BrainPOP movie, Tim and Moby introduce you to the use of similar triangles as a tool for solving certain types of problems. Discover all about what indirect measurement is, and how it can help you size up shapes that can’t be measured directly.
www.brainpop.com/math/geometry/similartriangles/ www.brainpop.com/math/geometry/similartriangles/
Figures that are the same shape but not necessarily the same size are called similar figures. You encountered similar figures in the Pre-Algebra unit about ratios and proportions. The triangles at the right are similar.
www.math.com/school/subject3/lessons/S3U3L2GL.html
Definitions