MA-307

Triangles, quadrilaterals and polygons

Lower Sec Maths · Secondary 1 · Hard · Triangles, quadrilaterals and polygons

In a regular hexagon, each interior angle is equal.

(a) Find the size of each interior angle.
(b) Hence, find the size of each exterior angle.

Take the sum of interior angles of an n-sided polygon to be

(n-2)\times 180^\circ

Interior $135^\circ$ , exterior $45^\circ$
Interior $120^\circ$ , exterior $60^\circ$
Interior $140^\circ$ , exterior $40^\circ$
Interior $160^\circ$ , exterior $20^\circ$

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