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the sizes of seven of the exterior angles of an octagon are
42°, 110°, 130, 67°, 55°, 11° and 53º.
Work out the size of each of the eight interior angles.

Respuesta :

Answer:

Below in bold.

Step-by-step explanation:

The exterior angles add up to 360,

so the 8th exterior angle = 30 - (42+110+13+67+55+11+53)

= 9 degrees.

Interior angle = 180 - exterior, so in order the interior angles are:

138, 70, 167, 113, 125, 169, 127 and 171 degrees.

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