Euclidean geometry | Equivalence (mathematics) | Triangle geometry
In Euclidean geometry, two objects are similar if they have the same shape, or one has the same shape as the mirror image of the other. More precisely, one can be obtained from the other by uniformly scaling (enlarging or reducing), possibly with additional translation, rotation and reflection. This means that either object can be rescaled, repositioned, and reflected, so as to coincide precisely with the other object. If two objects are similar, each is congruent to the result of a particular uniform scaling of the other. For example, all circles are similar to each other, all squares are similar to each other, and all equilateral triangles are similar to each other. On the other hand, ellipses are not all similar to each other, rectangles are not all similar to each other, and isosceles triangles are not all similar to each other. If two angles of a triangle have measures equal to the measures of two angles of another triangle, then the triangles are similar. Corresponding sides of similar polygons are in proportion, and corresponding angles of similar polygons have the same measure. Two congruent shapes are similar, with a scale factor of 1. However, some school textbooks specifically exclude congruent triangles from their definition of similar triangles by insisting that the sizes must be different if the triangles are to qualify as similar. (Wikipedia).
This video introduces similarity and explains how to determine if two figures are similar or not. http://mathispower4u.com
From playlist Number Sense - Decimals, Percents, and Ratios
Labeling corresponding parts and proportions of sides of similar figures
Learn how to solve with similar polygons. Two polygons are said to be similar if the corresponding angles are congruent (equal). When two polygons are similar the corresponding sides are proportional. Knowledge of the length of the sides or the proportion of the side lengths of one of the
From playlist Similar Polygons
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side
From playlist Similar Triangles
Similarity And Congruence: Similar Triangle in Triangle (Find Smaller) (Grade 5) - Maths Revision
Topic: Similarity And Congruence: Similar Triangle in Triangle (Find Smaller) Do this paper online for free: https://www.onmaths.com/similarity-and-congruence/ Grade: 5 This question appears on calculator higher and foundation GCSE papers. Practise and revise with OnMaths. Go to onmaths.c
From playlist Similarity And Congruence
Similar Triangles Using Side-Side-Side and Side-Angle-Side
This video explains how to determine if two triangles are similar using SSS and SAS. Complete Video List: http://www.mathispower4u.yolasite.com
From playlist Similarity
Geometry - How to show two triangles are similar using AA with parallel sides
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side
From playlist Similar Triangles
What is the similarity of triangles for SSS
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side
From playlist Similar Triangles
Using Similarity and proportions to find the missing values
👉 Learn how to solve with similar triangles. Two triangles are said to be similar if the corresponding angles are congruent (equal). Note that two triangles are similar does not imply that the length of the sides are equal but the sides are proportional. Knowledge of the length of the side
From playlist Similar Triangles
Similarity And Congruence: Similar Triangle in Triangle (Find Larger) (Grade 5) - Maths Revision
Topic: Similarity And Congruence: Similar Triangle in Triangle (Find Larger) Do this paper online for free: https://www.onmaths.com/similarity-and-congruence/ Grade: 5 This question appears on calculator higher and foundation GCSE papers. Practise and revise with OnMaths. Go to onmaths.co
From playlist Similarity And Congruence
CA Geometry: More on congruent and similar triangles | Worked examples | Geometry | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/geometry-home/geometry-miscellaneous/geometry-worked-examples/v/ca-geometry-more-on-congruent-and-similar-triangles 17-20, more similar and congruent triangles Wa
From playlist Worked examples | Geometry | Khan Academy
CA Geometry: Similar triangles 1 | Worked examples | Geometry | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/geometry-home/geometry-miscellaneous/geometry-worked-examples/v/ca-geometry-similar-triangles-1 10-14, similar triangles Watch the next lesson: https://www.khanac
From playlist Worked examples | Geometry | Khan Academy
Solve the SIMILAR Polygons Problem – must KNOW to PASS Geometry…
TabletClass Math: https://tcmathacademy.com/ Geometry help with solving a similar polygon problems. For more math help to include math lessons, practice problems and math tutorials check out my full math help program at https://tcmathacademy.com/ Math Notes: Pre-Algebra Notes: h
From playlist GED Prep Videos
Similar triangle basics | Similarity | Geometry | Khan Academy
Introduction to what it means for triangles to be similar Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/e/similar_triangles_1?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson
From playlist High School Geometry | High School Math | Khan Academy
Identifying similar triangles in the coordinate plane | Analytic geometry | Geometry | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/analytic-geometry-topic/geometry-problems-coordinate-pla/e/geometry-problems-on-the-coordinate-plane?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://ww
From playlist Analytic geometry | Geometry | Khan Academy
Testing similarity through transformations | Similarity | Geometry | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/similarity/similarity-and-transformations/e/exploring-angle-preserving-transformations-and-similarity?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https://w
From playlist High School Geometry | High School Math | Khan Academy
TabletClass Math: Geometry Course: https://tabletclass-academy.teachable.com/p/tabletclass-math-geometry1 https://tcmathacademy.com/ Understand what you will learn in a high school level geometry course. For more math help to include math lessons, practice problems and math tutorials
From playlist Geometry
Quadrilateral similarity by showing congruent angles | Similarity | Geometry | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/similarity/similarity-and-transformations/e/defining-similarity-through-angle-preserving-transformations?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: https:
From playlist High School Geometry | High School Math | Khan Academy
Similarity postulates | Similarity | Geometry | Khan Academy
Thinking about what we need to know to determine whether two triangles are similar Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/e/similar_triangles_1?utm_source=YT&utm_medium=Desc&utm_campaign=Geomet
From playlist High School Geometry | High School Math | Khan Academy
Similar triangle example problems | Similarity | Geometry | Khan Academy
Multiple examples looking for similarity of triangles Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/geometry/similarity/triangle_similarlity/e/similar_triangles_2?utm_source=YT&utm_medium=Desc&utm_campaign=Geometry Watch the next lesson: ht
From playlist High School Geometry | High School Math | Khan Academy
You’ve heard about similar triangles, but do you know what technically makes two triangles similar? Informally, we can say that two triangles are similar if their associated angles are congruent. In other words, their angle measures have to be the same. However, the triangles don’t necess
From playlist Popular Questions