(a)[1]
State the mathematical name of this quadrilateral.
(b)[2]
Determine the value of $a$.
Mathematics 0580 · IGCSE · Geometrical terms
Geometrical terms — practice question
The figure is a quadrilateral whose sides all have the same length. NOT TO SCALE. The two interior angles at the bottom are marked $a^\circ$ and $2a^\circ$.