Chapter 5 of 5
Concept Maps
Lines and Angles — Concept Maps
Gujarat Board · Class 7 · Mathematics
3 concept maps of Lines and Angles for Gujarat Board Class 7 Mathematics, each also written out as a text outline.
45 questions5 concepts
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3 Concept Maps
Lines and Angles – Complete Chapter Overview
The map in words
- Lines and Angles
- Basic Concepts
- Line Segment
- Two end points
- Fixed length
- Ray
- One end point
- One direction
- Line
- No end points
- Both directions
- Angle
- Acute less than 90
- Right equals 90
- Obtuse 90 to 180
- Line Segment
- Related Angles
- Complementary
- Sum equals 90 degrees
- C for Corner
- Supplementary
- Sum equals 180 degrees
- S for Straight
- Linear Pair
- Adjacent and supplementary
- Form straight line
- Vertically Opposite
- Always equal
- X shape at intersection
- Complementary
- Pairs of Lines
- Intersecting Lines
- Meet at one point
- Parallel Lines
- Never meet
- Symbol double vertical bars
- Transversal
- Cuts two lines
- At distinct points
- Intersecting Lines
- Transversal Angles
- Interior Angles
- Between the lines
- Angles 3 4 5 6
- Exterior Angles
- Outside the lines
- Angles 1 2 7 8
- Corresponding
- Same side
- F shape
- Equal if parallel
- Alternate Interior
- Opposite sides
- Z shape
- Equal if parallel
- Co interior
- Same side
- C shape
- Supplementary if parallel
- Interior Angles
- Checking Parallel Lines
- Equal corresponding angles
- Equal alternate interior
- Supplementary co interior
- Basic Concepts
Lines and Angles – Complete Chapter Overview
The map in words
- Lines and Angles
- Basic Figures
- Line Segment
- Two end points
- Fixed length
- Ray
- One end point
- One direction
- Line
- No end points
- Infinite length
- Line Segment
- Types of Angles
- Acute
- Less than 90
- Right
- Exactly 90
- Obtuse
- 90 to 180
- Straight
- Exactly 180
- Reflex
- 180 to 360
- Acute
- Angle Pairs
- Complementary
- Sum equals 90
- Supplementary
- Sum equals 180
- Linear Pair
- Adjacent and 180
- Vertically Opposite
- Always Equal
- Complementary
- Pairs of Lines
- Intersecting Lines
- Meet at a point
- Parallel Lines
- Never meet
- Transversal
- Cuts two lines
- Intersecting Lines
- Transversal Angles
- Corresponding
- F shape Equal
- Alternate Interior
- Z shape Equal
- Co Interior
- C shape Supplementary
- Alternate Exterior
- Equal in parallel
- Corresponding
- Basic Figures
Lines and Angles - Concept Overview
The map in words
- Lines and Angles
- Basic Elements
- Line Segment
- Two endpoints
- Fixed length
- Ray
- One endpoint
- Extends infinitely
- Line
- No endpoints
- Extends infinitely
- Line Segment
- Angle Classification
- Acute Angle
- Between 0 and 90
- Right Angle
- Exactly 90
- Obtuse Angle
- Between 90 and 180
- Straight Angle
- Exactly 180
- Acute Angle
- Angle Relationships
- Complementary
- Sum equals 90
- Supplementary
- Sum equals 180
- Linear Pair
- Adjacent angles
- On straight line
- Vertically Opposite
- Equal angles
- Formed by intersecting lines
- Complementary
- Transversals
- Interior Angles
- Between two lines
- Exterior Angles
- Outside two lines
- Corresponding Angles
- Same position
- Alternate Interior
- Opposite sides
- Interior Angles
- Parallel Lines
- Properties
- Equal corresponding angles
- Equal alternate interior angles
- Supplementary co-interior angles
- Testing
- Check corresponding angles
- Check alternate angles
- Check co-interior angles
- Properties
- Basic Elements
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Explore DiagramsFrequently Asked Questions
What are the important topics in Lines and Angles for Gujarat Board Class 7 Mathematics?
Key topics in Lines and Angles include Basic Concepts: Lines, Line Segments, and Rays, Related Angles: Complementary and Supplementary, Adjacent Angles, Linear Pair, and Vertically Opposite Angles, Pairs of Lines: Intersecting Lines and Transversal. Study these first, then practise questions on each for Class 7 exams.
What do the concept maps for Lines and Angles show?
The 3 maps show how the ideas in Lines and Angles connect: Lines and Angles – Complete Chapter Overview; Lines and Angles – Complete Chapter Overview. Each map is also written out as an outline on this page.
How should I revise Lines and Angles for Class 7 exams?
Learn the core ideas first, then work through the 45 practice questions on Lines and Angles. Revise definitions regularly and use flashcards for quick recall before the exam.
Sources & Official References
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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