Geometry
Standard for Grades 3–5
Angles
and Symmetry
Apply
transformations and use symmetry to analyze mathematical
situations
• predict and describe the results of sliding, flipping, and turning twodimensional
shapes;
• describe a motion or a series of motions that will show that two shapes
are congruent;
• identify and describe line and rotational symmetry in two and threedimensional
shapes and designs.
Step
1

View the Symmetry animation. It
is a great visual introduction. 
Step
2
Visit
these Websites and complete the activities.

ELab
Drag
the line to the shapes to show the
lines of symmetry.


Sheppard Software
Symmetry Game
How
many lines of symmetry does each shape
have?


Math Interactives
Compose
equivalent transformations in two different
ways.


AAA
Math Polygons
Identify
the names of polygons by size and angle.


Types of Triangles on a Geoboard
Observe and label the angle as
being acute, obtuse or right angle.

