University:
California State University, Northridge
Course:
PSY 321/L | Research Methods in Psychology and Lab
Academic year:

2023
Views:

303

Pages:

1
Author:

Kiara Good

Written Assignment 7: Dilations and Symmetry 1. Apply the indicated geometric transformations to Figures A and C below. Then draw all lines of symmetry for each of the resulting figures and fill in the blanks. • Dilate A by a factor of -1/2 with center at the origin to obtain B. • Rotate A and B angles 90°, 180°, and 270° (or -90°) with center at the origin. • Dilate C by a factor of 2 with center at the origin to obtain D. • Rotate C and D angles 90°, 180°, and 270° (or -90°) with center at the origin. A C Number of lines of symmetry: ____ Rotational Symmetry: ___-fold symmetry Number of lines of symmetry: ____ Rotational Symmetry: ___-fold symmetry Centrally symmetric? (Circle one) Yes/No Centrally symmetric? (Circle one) Yes/No 2. Determine all symmetries of this figure. a) Draw any lines of symmetry. b) Determine the angles of rotational symmetry: _______________________________ c) Is this figure centrally symmetric? _______ 3. Go to the website http://www.mcescher.com/gallery/mathematical/ and open M. C. Escher’s painting “Circle Limit IV”. Determine its symmetries: a) How many lines of symmetry are there? ______________________________ b) What are the angles of rotational symmetry? ______________________________ c) Is this painting centrally symmetric? (Circle one) Yes/No

Dilations and Symmetry Review Notes For Test

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