Chapter 14 - Identify Symmetry and Two-Dimensional Shapes
In this chapter, your student identifies symmetry in two-dimensional shapes, classifies triangles by their sides and angles, and classifies quadrilaterals. The vocabulary words for this chapter are: acute triangle, equiangular triangle, equilateral triangle, isosceles triangle, line of symmetry, line symmetry, obtuse triangle, parallelogram, rectangle, rhombus, right triangle, scalene triangle, square, and trapezoid.
Your student can practice identifying symmetry and classifying triangles and quadrilaterals by looking at architecture on a walk through your city or neighborhood!
By the end of this chapter, your student should feel confident with the learning targets and success criteria on the next page. Encourage your student!
Have a great time examining architecture!Name | Sides | Angles |
Triangle | 3 | 3 |
Quadrilateral | 4 | 4 |
Pentagon | 5 | 5 |
Hexagon | 6 | 6 |
Heptagon | 7 | 7 |
Octagon | 8 | 8 |
Nonagon | 9 | 9 |
Decagon | 10 | 10 |
Lesson |
Learning Target |
Success Criteria |
14.1 Line Symmetry |
Identify shapes that have line symmetry. |
· I can determine whether a shape has line symmetry. · I can identify how many lines of symmetry · I can draw each line of symmetry a shape has. |
14.2 Draw Symmetric Shapes |
Draw symmetric shapes. |
· I can draw a symmetric shape given one half of the shape and a line of symmetry. · I can draw a symmetric shape given one half of the shape. |
14.3 Classify Triangles by Sides |
Classify triangles by their sides. |
· I can identify sides of a triangle with the same length. · I can identify sides of a triangle with different lengths. · I can use sides to classify a triangle. |
14.4 Classify Triangles by Angles |
Classify triangles by their angles. |
· I can identify an angle as right, acute, or obtuse. · I can use angles to classify a triangle. · I can use angles and sides to classify a triangle. |
14.5 Classify Quadrilaterals |
Classify quadrilaterals. |
· I can identify parallel sides and sides with the same length in a quadrilateral. · I can identify right angles of a quadrilateral. · I can use angles and sides to classify a quadrilateral. |