A144
B120
C108
D135

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Given :

▪︎The figure is of a regular octagon

▪︎Angle z is one of the eight angles of this octagon.

We know that :

▪︎All angles of a regular octagon sums upto form 1080°.

Which means :

Measure of angle z :

Thus, the measure of angle z = 135°

▪︎Therefore, the correct option is (D) 135

the sum of the lengths of any two sides of a triangle is greater than the length of the third side. if you take the three sides of a triangle and add them in pairs, the sum is greater than (not equal to) the third side. if that is not true, then it is not possible to construct a triangle with the given side lengths.

step-by-step explanation: