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Recovering the Sequence of Transformations to Show Congruence or Similarity
By James Olsen
Directions: Two figures will be given. Determine if they are congruent or similar. Then state the sequence of transformations that exhibits the congruence or similarity. There is an error in this video!! In example 3, the first translation should be using vector BF (and not vector AF). This is aligned with the following Common Core State Standards for Mathematics: [8.G.2] Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them. [8.G.4] Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two- dimensional figures, describe a sequence that exhibits the similarity between them. [G.CO.5] Given a geometric figure and a rotation, reflection, or translation, draw the transformed figure using, e.g., graph paper, tracing paper, or geometry software. Specify a sequence of transformations that will carry a given figure onto another. [G.SRT.2] Given two figures, use the definition of similarity in terms of similarity transformations to decide if they are similar
Perform sequences of transformations and determine congruence
By Khan Academy
Sal maps a given quadrilateral onto another using a translation, a dilation, and a reflection. The quadrilaterals are not congruent because a dilation was used.
Perform sequences of transformations and determine congruence
By Khan Academy
Sal reflects and then translates a given pentagon, and determines whether the resulting figure is congruent to the source figure.
Intercepts and Symmetry
By mathlablady1
Students will learn how to identify intercepts and test for symmetry in this video.
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal finds trigonometric identities for sine and cosine by considering angle rotations on the unit circle.
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal solves a problem by considering the periodicity of the tangent function.
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal finds several trigonometric identities for sine and cosine by considering horizontal and vertical symmetries of the unit circle.
Symmetry and periodicity of trigonometric functions
By Khan Academy
Sal finds several trigonometric identities for tangent by considering horizontal and vertical symmetries of the unit circle.
Introduction to Symmetry
By mathwithlarry
Introductory lesson concerning symmetry. Instructor Larry explains the general idea of symmetry and gives examples with letters in this clip. The instructor uses computer software for demonstration.
Symmetry of two-dimensional shapes
By Khan Academy
Sal checks whether various figure are symmetrical under a 180 degrees rotation.
Symmetry of two-dimensional shapes
By Khan Academy
Sal solves the following problem: Two of the points that define a certain quadrilateral are (-4,-2) and (0,5). The quadrilateral has a������������reflective symmetry over the lines y=x/2 and������������y=-2x + 5.������������Draw and classify the quadrilateral.
Symmetry of two-dimensional shapes
By Khan Academy
Sal introduces the concept of an axis of symmetry.,1332
Symmetry of two-dimensional shapes
By Khan Academy
Sal solves the following problem: Two of the points that define a certain quadrilateral are (0,9) and (3,4). The quadrilateral has reflective symmetry over the line y=3-x. Draw and classify the quadrilateral.
Symmetry for 4th Graders
By Brooke Wert
Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts.
[4.G.3-1.0] Lines of Symmetry - Common Core Standard
By Freckle education
Recognize a line of symmetry for a two-dimensional figure as a line across the figure such that the figure can be folded along the line into matching parts.
4.G.3 - Understanding Symmetry(Grade4 Math) | www.lumoslearning.com
By Lumos Learning
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