Question

what is the measure of each interior angle of a regular decagon ?

Answer 1

Answer:

144°

Step-by-step explanation:

As decagon has 10 sides

so, n = 10

each interior angle =( (n-2) × 180°)/n

                                = ( (10-2) × 180°) /10

                                =  8 × 180°/10

                                =  1440°/10

                                = 144°