4MA0 Foundation June 2014 Paper 1 Q10

EdexcelFoundationOld spec4 marksAngles (Including Parallel Lines)

10

Quadrilateral ABCD made of two isosceles triangles ABD and CBD with DA = DB = DC; angles BAD and BCD are 35°; angle ADC = x° marked

Diagram NOT accurately drawn

The diagram shows a quadrilateral \(ABCD\).
The quadrilateral \(ABCD\) is made from two identical isosceles triangles, \(ABD\) and \(CBD\).
\(DA = DB = DC\).
Angle \(BAD\) = Angle \(BCD = 35^\circ\)
Angle \(ADC = x^\circ\)

Work out the value of \(x\).

(4)