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Number Sense

Understanding numbers, their relationships and numerical reasoning

Algebra

Using symbols to solve equations and express patterns

Geometry

Studying shapes, sizes and spatial relationships in mathematics

Measurement

Quantifying and comparing attributes like length, weight and volume

Operations

Performing mathematical operations like addition, subtraction, division

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources

Get started with our Resources

Calculator Suite

Exploring functions, solving equations, constructing geometric shapes

Graphing Calculator

Visualizing equations and functions with interactive graphs and plots

Geometry

Exploring geometric concepts and constructions in a dynamic environment

3D Calculator

Graphing functions and performing calculations in 3D

Scientific Calculator

Performing calculations with fractions, statistics and exponential functions

Notes

Explore online note taking app with interactive graphs, slides, images and much more

App Downloads

Get started with the GeoGebra Apps

Number Sense

Understanding numbers, their relationships and numerical reasoning

Algebra

Using symbols to solve equations and express patterns

Geometry

Studying shapes, sizes and spatial relationships in mathematics

Measurement

Quantifying and comparing attributes like length, weight and volume

Operations

Performing mathematical operations like addition, subtraction, division

Probability and Statistics

Analyzing uncertainty and likelihood of events and outcomes

Community Resources

Get started with our Resources

Calculator Suite

Exploring functions, solving equations, constructing geometric shapes

Graphing Calculator

Visualizing equations and functions with interactive graphs and plots

Geometry

Exploring geometric concepts and constructions in a dynamic environment

3D Calculator

Graphing functions and performing calculations in 3D

Scientific Calculator

Performing calculations with fractions, statistics and exponential functions

Notes

Explore online note taking app with interactive graphs, slides, images and much more

App Downloads

Get started with the GeoGebra Apps

Math_TriangleSemblable_Bertrand_Quentin
Activity
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Math_TriangleSemblable_Bertrand_Quentin