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Course: 4th grade (Eureka Math/EngageNY) > Unit 4
Lesson 1: Topic A: Line and angles- Terms & labels in geometry
- Lines, line segments, & rays
- Identify points, lines, line segments, rays, and angles
- Lines, line segments, and rays review
- Angles: introduction
- Angle basics
- Angle basics review
- Estimate angle measures
- Naming angles
- Name angles
- Types of angles by measure
- Recognizing angles
- Recognize angles in figures
- Acute, right, & obtuse angles
- Angle types
- Drawing acute, right and obtuse angles
- Angle types review
- Parallel & perpendicular lines intro
- Parallel & perpendicular lines
- Identify parallel and perpendicular lines
- Drawing parallel line segments
- Draw parallel and perpendicular lines
- Parallel and perpendicular lines review
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Parallel and perpendicular lines review
Review the basics of parallel and perpendicular lines. Identify and draw parallel and perpendicular lines in some practice problems.
What are and ?
Want to learn more about parallel and perpendicular lines? Check out this video.
Practice set 1: Identify parallel and perpendicular lines
Want to try more problems like this? Check out this exercise.
Practice set 2: Draw parallel and perpendicular lines
Want to try more problems like this? Check out this exercise.
Want to join the conversation?
- Quick question how do you prove that lines are parallel? I can't seem to find that on here and i really need to know!(206 votes)
- If you draw a line through the 2 lines, it should be perpendicular to both lines.(45 votes)
- I am having trouble remember these. Anyone have any tips to help me remember?
Edit : Case Closed. But thank you Taylyn for answering my question! Everyone have a nice day.(46 votes)- Yes. In the word Parallel, the double L's are side by side, and if going on in a straight line, would never touch. So, the double L's in Parallel are, well, parallel. Use those as an example to help you remember what parallel means.(67 votes)
- Are perpendicular any kind of lines that intersect each other? I've got to know this!(26 votes)
- Yes, perpendicular lines intersect each other with 4 90-degree angles.(7 votes)
- Does a perpendicular line ALWAYS have to be 90 degrees? Just a Question(18 votes)
- Yes, a perpendicular line must always be at a 90-degree angle(32 votes)
- Why does the human brain have to know what geometry is?(13 votes)
- So it can identify shapes and measure things. It also helps make the human brain grow.
Hope this helps :D(20 votes)
- What happens if a Parallel line goes through a regular line so that make it perpendicular so what is that.(16 votes)
- If the parallel line goes through the line, the lines will not be parallel anymore, so they will only be perpendicular if they meet at a right angle.(13 votes)
- does perpendicular line have to be the exactly 90 degrees?(11 votes)
- It always have to be exactly at a right angle, and a right angle is always 90 degrees so yes.(6 votes)
- Parallel Lines is two lines thats are the same lines together. (Cant make a picture of it but you can look it up) Notice there's two lines that are crossed? That's Perpendicular! Perpendicular Lines are two Lines that do cross(11 votes)
- what is are perpendicular and parallel lines(5 votes)
- Perpendicular means they make a right angle. (A 45 degree angle) Parallel means they will go on forever and never meet.(7 votes)
- How to know if two lines are perpendicular if there are also lines that are connected and they aren't perpendicular?(5 votes)
- No it has to be a perfect 90 degree angle(1 vote)