We found 16,844 reviewed resources for similarities
Informal Proof of AA Criterion for SimilarityEngageNY
8th CCSS: Designed
What does it take to show two triangles are similar? The 11th segment in a series of 16 introduces the AA Criterion for Similarity. A discussion provides an informal proof of the theorem. Exercises and problems require scholars to apply...
The Angle-Angle (AA) Criterion for Two Triangles to Be SimilarEngageNY
9th - 10th CCSS: Designed
What do you need to prove triangles are similar? Learners answer this question through a construction exploration. Once they establish the criteria, they use the congruence and proportionality properties of similar objects to find...
Ratios and Proportions with Congruent and Similar PolygonsLesson Planet
8th - 11th CCSS: Adaptable
Investigate how similar and congruent figures compare. Learners understand congruent figures have congruent sides and angles, but similar figures only have congruent angles — their sides are proportional. After learning the...
Area and Perimeter of Similar Polygons: LessonLesson Planet
3 mins 7th - 11th
Find the square of the scale factor. A component of a large playlist on geometry discusses the ratios of the perimeters and areas of two similar polygons. The resource shows examples in finding the ratios that lead to a pattern.
Triangle AA Similarity: LessonLesson Planet
3 mins 7th - 11th CCSS: Adaptable
Two sets of congruent angles leads to three. Using diagrams of two triangles, the presentation intuitively shows that if two sets of angles are congruent, the third set is too. The portion of a geometry playlist uses that information to...
Similarity and Dilations - Discover Properties of Similar FiguresLesson Planet
9th - 12th CCSS: Designed
Learners investigate properties of similar figures. In this properties of similar figures lesson, pupils construct similar figures using Cabri Jr. They dilate their figure to create a similar one, and discuss the relationships between...
Congruent and Similar Figures - Homework 15.2Lesson Planet
5th - 8th
Use this mathematical figures worksheet to have learners decide if four sets of figures are congruent, similar or neither. They study two figures in order to solve six measurement problems, and answer one problem solving word problem.
Dilations and SimilarityLesson Planet
8th - 10th CCSS: Adaptable
In this dilations and similarity worksheet, pupils solve 10 different problems that include various dilations. First, they determine the scale factor of dilations found in the illustrated graphs. Then, everyone determines the coordinates...
Congruent and Similar Figures - Problem Solving 15.2 WorksheetLesson Planet
4th - 6th
A theoretical NASA project is the foundation of this worksheet, in which learners will word to determine congruent and similar figures. They solve 4 word problems where they measure, draw and identify congruent and similar figures from...