Main content
Learn
Dilating shapes: expandingDilating shapes: shrinkingDilating pointsDilations: scale factorDilations and properties
Practice
Dilate pointsGet 3 of 4 questions to level up!
Dilations: scale factorGet 3 of 4 questions to level up!
Dilate trianglesGet 3 of 4 questions to level up!
Dilations and propertiesGet 3 of 4 questions to level up!
Learn
Intro to triangle similarityTriangle similarity postulates/criteriaDetermining similar trianglesSimilar shapes & transformations
Practice
Determine similar triangles: AAGet 3 of 4 questions to level up!
Similarity & transformationsGet 3 of 4 questions to level up!
Learn
Intro to the Pythagorean theoremPythagorean theorem examplePythagorean theorem word problem: carpetPythagorean theorem intro problemsPythagorean theorem with isosceles trianglePythagorean theorem word problem: fishing boatThiago asks: How much time does a goalkeeper have to react to a penalty kick?Garfield's proof of the Pythagorean theoremBhaskara's proof of the Pythagorean theoremPythagorean theorem proof using similarityAnother Pythagorean theorem proof

About this unit

"The experimental study of rotations, reflections, and translations in Module 2 prepares students for the more complex work of understanding the effects of dilations on geometrical figures in their study of similarity in Module 3. They use similar triangles to solve unknown angle, side length and area problems. Module 3 concludes with revisiting a proof of the Pythagorean Theorem from the perspective of similar triangles. " Eureka Math/EngageNY (c) 2015 GreatMinds.org