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==== Concept #: Types of triangles based on sides and angles ====
==== Concept #: Types of triangles based on sides and angles ====
Variations in elements that make a triangle results in distinct triangles. Recognizing these variations helps in interpreting changes that are possible with in a triangle.
Variations in elements that make a triangle results in distinct triangles. Recognizing these variations helps in interpreting changes that are possible with in a triangle.
'''Video resource:''' Explanation of Types of Triangles by NCERT
{{Youtube|SXYZd536Vao
}}
===== Activities # =====
===== Activities # =====
====== [[Angle sum property]] ======
====== [[Angle sum property]] ======
Interior angles of a triangle are in relation and also determine the type of angles that can forms a triangle. This also helps in determining an unknown angle measurement.
Interior angles of a triangle are in relation and also determine the type of angles that can forms a triangle. This also helps in determining an unknown angle measurement.
'''Video resource:''' Classroom activity for angle sum property of Triangle by NCERT
{{Youtube|BRDAXvQlzt0
}}
====== [[Angle sum property of a Triangle]] ======
====== [[Angle sum property of a Triangle]] ======
=== Projects (can include math lab/ science lab/ language lab) ===
=== Projects (can include math lab/ science lab/ language lab) ===
'''''Laboratory Manuals''' - Mathematics : [https://ncert.nic.in/pdf/publication/sciencelaboratorymanuals/classIXtoX/mathematics/lelm402.pdf Click here] to refer activity 15,16,18 and 20'' which explains the properties of Triangle.
=== Assessments - question banks, formative assessment activities and summative assessment activities ===
=== Assessments - question banks, formative assessment activities and summative assessment activities ===
# [[:File:Introducction to Triangles.pdf|Introduction to triangles]]
# [[:File:Types of Triangle by sides.pdf|Types of Triangle by sides]]
# [[:File:Properties of Triangles.pdf|Properties of Triangle]]
[[Category:Class 9]]
[[Category:Class 9]]
[[Category:Class 8]]
[[Category:Class 8]]
