Angle sum property of a triangle

In Figure,the side BC of ABC is produced to form ray BD as shown.Ray CE is drawn parallel to BA .Show directly,without using the angle sum property of a triangle that ACD=/_A+/_b and deduced that /_A+/_B+/_C=180^(0).

In Figure,the side BC of hat grad ABC is produced to form ray BD as shown.Ray CE is drawn parallel to BA. Show directly,without using the angle sum property of a triangle that /_ACD=/_A+/_B and deduced that /_A+/_B+/_C=180^(@).

Lines and Angles (Angle Sum property of Triangles)|Exterior Angle of a Triangles |Practice Problems|NCERT Exercise

NCERT Exercise|Lines and Angles (Angle Sum property of Triangles)|Exterior Angle of a Triangles |Practice Problems

THEOREM (Exterior Angle Property of a Triangle): If a side of a triangle is produced the exterior angle so formed is equal to the sum of two interior opposite angles.

Angle sum property of quadrilateral

Angle Sum Property Of Triangle|Angle Sum Property Of Quadrilaterals|Angle Sum Property Of Polygons|Question Practice|OMR

Angle Sum Property Of Triangle|Angle Sum Property Of Quadrilaterals|Angle Sum Property Of Polygons|Question Practice

Lines And Angles Theorem 1 (Co-Interior Angle)|Theorem (Angle Sum Property Of Triangle)|Theorem (Exterior Angle Property Of Triangle)

Lines And Angles Theorem 1 (Co-Interior Angle)|Theorem (Angle Sum Property Of Triangle)|Theorem (Exterior Angle Property Of Triangle)