Object Reflections and Symmetry Module 9. Session Topics ● Reflection of an object ● Planes of symmetry ● Reflections through rotations.

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Presentation transcript:

Object Reflections and Symmetry Module 9

Session Topics ● Reflection of an object ● Planes of symmetry ● Reflections through rotations

Object Transformations: Reflection Reflection Plane Each point, A, is associated with an image point, A’, such that the plane, P, is a perpendicular bisector of the line segment AA’. A reflection across a plane displays the object’s mirror image.

Object Transformations: Reflection Plane of symmetry occurs if the parts of the object on both sides of the plane are mirror images of each other.

Object Transformations: Reflection through Rotation For a symmetric object, the mirror image can occur by rotating one side of the object 180°about an axis of rotation that's in the plane of symmetry.

Object Transformations: Reflection Many objects have multiple planes of symmetry Infinite52

Course Software….. ● Work through the Reflections and Symmetry software module

Object Reflections and Symmetry Homework … ● Complete the following pages in Module 9 ● reflx/sym- – – –