triangles

Triangles And its properties

If A,B,C are three non Collinear points ,the figure made up by three line segments AB,BC and CA is called a triangle A B C

The Six elements of a triangle are- ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A B C

Interior & Exterior of a triangle A B C P Q m

Various types of triangles ,[object Object],6 cm 6 cm 6 cm

Isosceles triangle 6 cm 6 cm 4 cm

Scalene triangle 5 cm 13 cm 6 cm

Perimeter of a Triangle 5cm 5cm 4cm Perimeter=5cm+5cm+4cm=14cm

Angle sum property of a Triangle ,[object Object],A B C B C A

Angle sum property of a Triangle 1 2 3 4 5 Angle 4 + Angle 3 + Angle 5=180º Angle 1 + Angle 3 + Angle 2=180º

Find the missing angle Find the angle x 55 50 x

Triangle Inequality Property ,[object Object],A B C AB+BC >AC AB+AC>BC AC+BC>AB

Triangle Inequality Property A B C AB+BC >AC

Triangle Inequality Property A B C AB+AC>BC

Triangle Inequality Property A B C AC+BC>AB

Brain teasers ,[object Object],[object Object],[object Object]

Can you construct a triangle with given sides 3cm , 4cm and 7 cm.Why or why not ?

Presentation made by NIHARIKA GOSWAMI

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