Similar Triangles

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2019-10-20 02:15

This example demonstrates the properties of similar triangles. Key mathematical concepts include the definition and criteria for similar triangles. Using GeoGebra commands such as Intersect, Line, and Point, similar triangles can be constructed, and measurements and analyses of triangle sides and angles can be performed with Distance and Slope commands. Suitable for middle and high school students learning about similar triangles.

GeoGebra Commands & Parameters

Intersect(xAxis, yAxis) → A
Line(A, B) → f
Line(A, f) → g
Line(A, xAxis) → h
Point(g) → C
OrthogonalLine(C, h) → i
Intersect(i, h) → D
Angle(B, A, D) → α
Distance(A, D) → distanceAD
Distance(C, D) → distanceCD
Angle(C, D, A) → β
Slope(i) → m
Slope(g) → Ratio