Mathematics 0580 · IGCSE · Angles

Angles — practice question

Triangles $ABC$ and $ACD$ are isosceles. $\angle DAB=86^{\circ}$ and $\angle ADC=58^{\circ}$. The diagram shows $x^{\circ}$ at $\angle ABC$. The diagram is not drawn to scale.

(main)[3]

Calculate the value of $x$.

Worked solution & mark scheme

This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Either $x+x+58+58+86=360$ or $86-(180-2\times58)$” …

Full mark scheme, point by point
Step-by-step worked solution
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