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Outline
ICSE-ClassIX-Math
9.Triangles (congruency)
ICSE-ClassIX-Math
Author:
Sekhar S
ICSE Math activities of class IX
https://cisce.org/UploadedFiles/PDF/12.%20ICSE%20Mathematics.pdf
9.Triangles (congruency)
Triangle Sides and Angles
Angles opposite to equal sides (isosceles triangle)
Triangle Medians: Quick Investigation
Medians Centroid Theorem (Proof without Words)
Medians and Centroid Dance
Triangle Altitude Illustrator and Definition Writing Prompt
Drawing Orthocentre & Some Quiz
Triangle Exterior Angle
Polygons: Exterior Angles
SAS Theorem & Similarity
SAS: Dynamic Proof!
ASA Theorem?
gg
Next
Triangle Sides and Angles
New Resources
Similar Solids
Basic Percent Exercises (V2)
A note on Erdős’s mysterious remark
International Day of Mathematics 2025
Experiments with Transformations in the Plane
Discover Resources
GeoMind
P3-A2-Mr.G_1st
Parallel Lines Investigation
Definição de Esfera
Garden problem
Discover Topics
Random Variables
Division
Parametric Curves
Cosine
Similar Triangles