1. Grade 4 - Identify Quadrilaterals

2. Set the Purpose
You have learned to identify parallel lines and right angles. Today, you will learn to use these features to classify quadrilaterals.
What is the same about all polygons that are quadrilaterals?

3. Quadrilaterals – In your notebook, match each shape with a description
Quadrilaterals – In your notebook, match each shape with a description! Draw and write the shape next to each description.
1. Opposite sides parallel; all sides the same length
2. Only 1 pair of parallel sides
3. 2 pairs of parallel sides
4. 4 right angles
5. 4 right angles; all sides the same length
Rhombus Trapezoid Parallelogram Rectangle Square

4. Quadrilaterals A parallelogram has 2 pairs of parallel sides.
A rectangle has 4 right angles. It is also a parallelogram.

5. Quadrilaterals
A square has 4 right angles and all sides are the same length.
It is a parallelogram, rectangle, and rhombus.

6. Quadrilaterals
A rhombus is a quadrilateral that has opposite sides that are parallel and all of its sides are the same length.

7. Quadrilaterals
A trapezoid is a quadrilateral with only one pair of parallel sides.

8. Day 2
What are all the names you can use for this quadrilateral? __________________

9. All possible quadrilaterals
What are all the names you can use for this quadrilateral?
___________________
___________________ ______________________
____________________ ____________________

10. All possible quadrilaterals
What are all the names of quadrilaterals you can use for this quadrilateral?
_____________________ ____________________
_____________________

11. Homework
Pg. 206 (#1-23)

12. Worksheets Finish measuring angles worksheet
Work on quadrilateral worksheet

13. Practice - Triangles

14. Practice - Polygons

15. Practice - Angles

16. Practice - Lines

17. Practice

18. Practice