3 rd Grade Geometry Lesson Points line segments
- Slides: 35
3 rd Grade Geometry Lesson Points, line segments, rays, parallel lines, perpendicular lines
What is a point? o Tells you an exact location.
Which is a point?
That is correct!
What is a line? A straight path that goes without end in two directions. Click to go back to review question 4
Which is a line?
That is correct!
What is a line segment? Part of a line with two end points. Examples: top of a door, side of a paper, pencil Click to go back to review question 5
Which is a line segment?
That is correct!
What is a ray? Part of a line that has one end point and goes in one direction without end. Example: laser pointer- it starts at the pointer and continues on forever in one direction as long as there is nothing blocking it Click to go back to review question 2
Which is a ray?
That is correct!
What are parallel lines? Two lines or line segments can either intersect (cross) each other or be parallel. Think of the parallel lines as never meeting each other, no matter how much you would continue them to both directions. Example: lines on a piece of paper Click to go back to review question 1
Parallel Lines These lines intersect. These lines are parallel.
Tip If you are not sure the lines are parallel, continue drawing the lines with a ruler and see if they meet. These lines look parallel, but if you continue them they are not.
Which set of lines are parallel?
That is correct!
Which set of lines are NOT parallel?
That is correct!
What are perpendicular lines? Lines that intersect or cross to form a right angle (90 degree angle). Example: sides that meet on a window Click to go back to review question 3
Which set of lines are perpendicular?
That is correct!
Which set of lines are NOT perpendicular?
That is correct!
Review Quiz Question 1 Two lines that never cross are called ______ lines. a. Point b. Perpendicular c. Parallel d. Intersecting
That is correct!
Review Question 2 Part of a line that has one endpoint and one end that goes on in the other direction with no end is called a ________. a. Line segment b. Ray c. Line d. Parallel line
That is correct!
Review Question 3 Lines that intersect or cross to form a right angle are called _______. a. Parallel lines b. Points c. Perpendicular lines d. Line segments
That is correct!
Review Question 4 A line is ___________. a. a straight path that goes without end in two directions. b. part of a line with two end points. c. part of a line that has one end point and goes in one direction without end. d. tells you an exact location.
That is correct!
Review Question 5 A line segment is ___________. a. Lines that intersect or cross to form a right angle (90 degree angle). b. a straight path that goes without end in two directions. c. part of a line with two end points. d. part of a line that has one end point and goes in one direction without end.
That is correct!
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