1. GEOMETRY
4.8A Identify and describe right, acute, and obtuse angles.
4.8B Identify and describe parallel, intersecting, and perpendicular lines using concrete objects and pictorial models.
4.8C Use essential attributes to define two and three dimensional figures.
Math Antics- Points, Lines, & Planes

2. Point/Vertex

3. Line Segment

4. Line

5. Ray

6. The important thing to remember about parallel lines is that they will never cross, no matter how far they are extended. They are always exactly the same distance apart.
Parallel
The symbol ║ indicates parallel lines
Journal Prompt: Write about why some item from the real world must have parallel lines.

7. Perpendicular
The important thing about perpendicular lines is that there
is a right angle where they meet
or cross.
The symbol ┴ indicates
perpendicular lines.

8. Lines intersect where they cross each other.
Intersecting Lines

9. Plane

10. Name a Geometric Term that best represents each object.
Highway Tip of a Marker 3. Screwdriver
4. Football Field Grain of salt
6. Two way arrow Meadow Piece of Rope
9. Flashlight Beam Extension Cord
11. Farm Field Railroad Track

11. Right Angle

12. Acute
LESS THAN 90°

13. Obtuse Angles
GREATER THAN 90°

14. What is this? What is this? What is this? What is this?

15. What is this?

16. What is this?

17. Is this angle acute, right, obtuse, or straight?

18. Is this angle acute, right, obtuse, or straight?

19. Is this angle acute, right, obtuse, or straight?

20. Is this angle acute, right, obtuse, or straight?

21. Is this angle acute, right, obtuse, or straight?

22. Are these lines perpendicular, Parallel, or intersecting?

23. Are these lines perpendicular, Parallel, or intersecting?

24. Are these lines perpendicular, Parallel, or intersecting?

25. Are these lines perpendicular, Parallel, or intersecting?

26. Are these lines perpendicular, Parallel, or intersecting?

28. What did you learn?