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Single Transformations of 2-D shapes reflection
Reflection: When a shape is reflected in a mirror we see a reflection image. The line segment that joins a point to its image is perpendicular to the line of reflection. A shape and its image have opposite orientations, or face opposite ways. A reflection is sometimes called a flip because when a shape is reflected, it is flipped over.
Practice drawing reflections on a piece of paper. Take a picture of your drawings and email them to your teacher!
SS 5.5 and 5.6 assignment 2
Terminology:
Edge: a line segment between faces.
Face: any of the flat surfaces of an object.
Vertex: the corner of an object
Side: In a 2 dimensional shape, one of the line segments, or edges, in a 3 dimensional shapes, one of the faces
Symmetrical: A shape is symmetrical when it can be folded so that one part matches the other part exactly. The fold line is the line of symmetry.
Look at the pictures below for further explanation.
Types of lines
Terminology:
Parallel: 2 sides that are the same distance apart and never meet.
Horizontal: A line that goes from left to right or right to left.
Vertical: A line that goes up and down.
Perpendicular: 2 lines that intersect at a right angle.
Right Angle: 2 lines that form a 90° Angle
Vertex: The point where 2 sides of a shape meet
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