Back to Angles are taken to angles of the same measure — Problem 4 · Task Set 20
Exercises: Rigid Motions Preserve Angle Measure
Work through each section in order. A rigid motion is a translation, reflection, or rotation. For each problem, decide what the angle-preservation property tells you before measuring or computing. Show your work where indicated.
Grade 8·21 problems·~30 min·Common Core Math - Grade 8·standard·8-g-a-1b
Work through problems with immediate feedback
A
Fluency Practice
Apply each transformation and verify the angle-preservation property. Use the measure of the original angle to predict the measure of the image.
1.
An angle measuring is rotated counterclockwise about the origin. What is the measure of the image angle, in degrees?