Introduction to Geometry, Polygons.pptx

geometry

1. Introduction to Points, Lines, Rays, and Angles INSPIRED BY

2. Points, line segments, rays, lines, and angles Real-life examples of points, line segments, rays, lines, and angles Parallel and perpendicular lines Lesson Outline

3. Without lifting your pen, how will you connect all these dots using only FOUR straight lines ? Connect the Dots!

4. In 1914, Sam Loyd released this puzzle in his book "Cyclopedia of Puzzles." To solve this one, we have to draw outside of the box! In this lesson, we'll learn about dots/points, lines, and more. Connect the Dots!

5. At the end of this lesson, we'll be able to: Learning Outcomes Differentiate points, lines, line segments, and rays from each other Recognize points, line segments, rays, lines, and angles in real-life examples Compare parallel and perpendicular lines

6. Point Did you notice that you always begin with a point when drawing or writing? A point is a single location in space. It doesn't have any size, length, or width. We show a point by drawing a tiny dot.

7. From a point, we can draw a line segment, a line, a ray, and an angle. Identify which is which in this example?

8. connects two points and has a length, but no width Line Segment What's the difference? extends infinitely in both directions, has no bends, and has no width Line starts at a point and extends continuously in one direction and has no defined length or width Ray forms between two rays or line segments that share a common endpoint Angle

9. Find the following in the figure: a point a line segment a ray a line an angle Let's investigate and discover!

10. Now that you're familiar with a point , a line segment , a ray , a line , and an angle , let's explore parallel lines and perpendicular lines ! Great Job!

11. Two lines that never intersect while moving in the same direction Parallel Lines Parallel and Perpendicular Lines Formed when a pair of lines intersect at a right angle Perpendicular Lines

12. Recap a single location in space Point connects two points Line Segment extends infinitely in both directions Line starts at a point and extends continuously in one direction forms between two rays or line segments that share a common endpoint Ray Angle Parallel Lines Perpendicular Lines Two lines that never intersect Formed when a pair of lines intersect at a right angle

13. Exercise your creativity and draw real-life examples showcasing a point, line segment, ray, line, and angle. Homework