1. Splash Screen

2. Five-Minute Check (over Lesson 13–3) Main Idea and Vocabulary
Key Concept: Classifying Quadrilaterals
Example 1: Describe Sides and Angles
Example 2: Describe Sides and Angles
Lesson Menu

3. I will identify characteristics of quadrilaterals.
rectangle
square
parallelogram
rhombus
trapezoid
Main Idea/Vocabulary

4. KC

5. Describe Sides and Angles
Describe the congruent sides in the quadrilateral. Then state whether any sides appear to be parallel or perpendicular.
Answer: Opposite sides are congruent and parallel. No sides are perpendicular.
Example 1

6. Opposite sides are parallel and no sides are perpendicular.
Describe the congruent sides in the quadrilateral. Then state whether any sides appear to be parallel or perpendicular.
Opposite sides are parallel and no sides are perpendicular.
Opposite sides are perpendicular but not parallel.
No sides are perpendicular or parallel.
Opposite sides are parallel and adjacent sides are perpendicular. A B C D
Example 1

7. Describe Sides and Angles
The design is made up of repeating quadrilaterals. Find the number of acute and obtuse angles.
Answer: Each quadrilateral has two acute angles and two obtuse angles.
Example 2

8. The design is made up of repeating quadrilaterals
The design is made up of repeating quadrilaterals. Find the number of acute angles in each quadrilateral. 1 2 3
none A B C D
Example 2

9. End of the Lesson
End Lesson

10. Five-Minute Check (over Lesson 13–3) Image Bank Math Tool Chest
Identify Angles
Resources

11. Find the number of congruent sides in the triangle.
(over Lesson 13–3)
Find the number of congruent sides in the triangle.
1 side
2 sides
3 sides
0 sides A B C D
Five Minute Check 1

12. Find the number of congruent sides in the triangle.
(over Lesson 13–3)
Find the number of congruent sides in the triangle.
1 side
2 sides
3 sides
0 sides A B C D
Five Minute Check 2

13. Find the number of congruent sides in the triangle.
(over Lesson 13–3)
Find the number of congruent sides in the triangle.
1 side
2 sides
3 sides
0 sides A B C D
Five Minute Check 3

14. Find the number of congruent sides in the triangle.
(over Lesson 13–3)
Find the number of congruent sides in the triangle.
1 side
2 sides
3 sides
0 sides A B C D
Five Minute Check 4

15. Find the number of congruent sides in the triangle.
(over Lesson 13–3)
Find the number of congruent sides in the triangle.
1 side
2 sides
3 sides
0 sides A B C D
Five Minute Check 5

16. End of Custom Shows