Khan Academy
Khan Academy View : Topic - Chapter 3: Understanding quadrilaterals
Sum of the exterior angles of convex polygon | Geometry | Khan Academy
-
domain:Mathematicssubject:8th grade (NCERT)topic:Chapter 3: Understanding quadrilaterals324 Reads -
- Domain
-
Subject
- Early math
- 3rd grade (U.S.)
- Arithmetic
- 4th grade (U.S.)
- 5th grade (U.S.)
- Grade 5 (NCERT)
- Basic geometry
- Algebra basics
- 6th grade (U.S.)
- Grade 6 (NCERT)
- 6th grade (Ontario)
- 6th grade (WNCP)
- Grade 7 (NCERT)
- 7th grade (U.S.)
- Pre-algebra
- Grade 8 (NCERT)
- 8th grade (U.S.)
- Geometry
- Algebra I
- Algebra II
- Trigonometry
- Linear algebra
- Precalculus
- Differential calculus
- Integral calculus
- Differential equations
- Multivariable calculus
- Probability and statistics
- Math for fun and glory
-
Topic
- Measurement and data
- Number Sense and Numeration
- Linear equations and functions
- Introduction to algebra
- Rational expressions, equations, and functions
- Transformations, congruence, and similarity
- Counting
- Chapter 11: Algebra
- Math warmups
- Geometry
- Data and modeling
- Solving equations with one unknown
- Algebraic expressions
- Foundations
- Graphing lines and slope
- Linear equations and inequalities
- Quadratics and polynomials
- Functions
- Introduction to polynomials
- Quadratic equations and functions
- Two-variable linear inequalities
- Addition and subtraction
- Decimals
- Fractions
- Multiplication and division
- Angles
- Area and perimeter
- Lines
- The coordinate plane
- Addition and subtraction intro
- Addition and subtraction within 100
- Congruence
- Geometric constructions
- Transformations
- Chapter 1: Knowing our numbers
- Chapter 12: Ratio and proportion
- Chapter 8: Decimals
- Chapter 9: Data handling
- Chapter 12: Algebraic expressions
- Chapter 13: Exponents and powers
- Chapter 4: Simple equations
- Chapter 8: Comparing quantities
- 3Blue1Brown
- Applying mathematical reasoning
- Arithmetic properties
- Ratios, proportions, units, and rates
- Imaginary and complex numbers
- Matrices
- Regression
- Equivalent expressions
- Negative numbers
- Patterns and Relations
- Statistics and Probability
- Rates and proportional relationships
- Systems of equations
- Expressions with exponents
- Absolute value equations, functions, and inequalities
- Expressions with rational exponents and radicals
- One-variable linear inequalities
- Rational and irrational numbers
- Seeing structure in expressions
- Arithmetic with polynomials
- Exponential and logarithmic functions
- Negative numbers and absolute value
- Telling time
- Shapes
- The Pythagorean theorem
- Addition and subtraction within 1000
- Addition and subtraction within 20
- Place value (tens and hundreds)
- Analytic geometry
- Angles and intersecting lines
- Chapter 4: Parts and wholes
- Chapter 7: Fractions
- Chapter 2: Fractions and decimals
- Chapter 5: Lines and angles
- Chapter 11: Mensuration
- Exponents, radicals, and scientific notation
- Measurement
- Arithmetic operations
- Data and statistics
- Expressions, equations, and inequalities
- One-variable linear equations
- Circles
- Similarity
- Chapter 10: Mensuration
- Chapter 10: Practical geometry
- Chapter 2: Linear equations in one variable
- Descriptive statistics
- Polynomial expressions, equations, and functions
- Volume and surface area
- Quadrilaterals
- Chapter 14: How big? How heavy?
- Chapter 6: Integers
- Chapter 9: Rational numbers
- Chapter 5: Data handling
- Factors and multiples
- Data Management and Probability
- Perimeter, area, and volume
- Tools of geometry
- Two-variable linear equations
- Chapter 13: Ways to multiply and divide
- Chapter 9: Algebraic expressions and identities
- Measurement and geometry
- Centripetal force and gravitation
- Circuits
- Discoveries and projects
- Fluids
- Forces and Newton's laws of motion
- Geometric optics
- Magnetic forces and magnetic fields
- Mechanical waves and sound
- One-dimensional motion
- Work and energy
- Advanced circulatory system physiology
- Advanced hematologic system physiology
- Circulatory system diseases
- Endocrine system diseases
- Executive systems of the brain
- Gastrointestinal system diseases
- Human anatomy and physiology
- Infectious diseases
- Mental health
- Respiratory system diseases
- Strokes
- Low salt diet
- Home-made robots
- Reverse engineering
- Earth geological and climatic history
- Scale of the universe
- Stars, black holes and galaxies
- Acids and bases
- Atoms, compounds, and ions
- Buffers, titrations, and solubility equilibria
- Chemical bonds
- Chemical reactions and stoichiometry
- Electronic structure of atoms
- Gases and kinetic molecular theory
- Kinetics
- Nuclear chemistry
- Periodic table
- Redox reactions and electrochemistry
- Cell division
- Crash Course: Biology and Ecology
- Evolution and the tree of life
- Membranes and transport
- Water, acids, and bases
- Ask a biologist (archive)
- Human prehistory
- Alkanes, cycloalkanes, and functional groups
- Alkenes and alkynes
- Amines
- Aromatic compounds
- Resonance and acid-base chemistry
- Algebraic thinking
- Place value and decimals
- Equations and geometry
- Variables & expressions introduction
- Equations & inequalities introduction
- Ratios, rates, & percentages
- Shape and Space
- Vectors
- Sequences, series and induction
- Limits
- Conic sections
- Probability and combinatorics
- Inferential statistics
- Independent and dependent events
- Statistical studies
- Random variables and probability distributions
- Doodling in Math and more
- AMC 10
- AIME
- Puzzles
- Chapter 1: Integers
- Chapter 13: Direct and inverse proportions
- Chapter 6: The triangle and its properties
- Negative numbers: multiplication and division
- Negative numbers: addition and subtraction
- Chapter 7: Cubes and cubes roots
- Chapter 6: Squares and square roots
- Chapter 3: Understanding quadrilaterals
- Chapter 15: Introduction to graphs
- Numbers and operations
- Special properties and parts of triangles
- Right triangles and trigonometry
- Introduction to exponential functions
- Systems of linear equations
- Linear equations and functions word problems
- Polynomial factorization
- Units of measurement in modeling
- Sequences
- Radical equations and functions
- Exponential growth and decay
- Modeling with algebra
- Manipulating functions
- Advanced equations and inequalities
- Advanced functions
- Trigonometric equations and identities
- The unit circle definition of sine, cosine, and tangent
- Trigonometry with general triangles
- Trigonometry with right triangles
- Sequences, series, and function approximation
- Integration techniques
- Integration applications
- Integrals
- AP Calculus practice questions
- Surface integrals
- Taking derivatives
- Derivative applications
- Matrix transformations
- Vectors and spaces
- First order differential equations
- Area
- The 19th century
- The 20th century
- The postwar era (1945-1980)
- Northern Renaissance: the sixteenth century
- Late Gothic art in Italy
- Early Renaissance in Italy: the fifteenth century
- Roman
- Southern Africa
- China
- Arts
- Computer programming