A regular pentagon ABCDE is shown. А E B. D Work out the size of angle x.
Attachments:
Answers
Answered by
9
Answer:
the answer is 36 degrees
Step-by-step explanation:
the interior angle of a regular pentagon is 108 and BCD is and isoceles one so b and d are same .
sum of angles of a triangle is 180 degrees
so 180-108=72
72/2=36 so that's the answer
please mark me as brainliest
Answered by
3
Answer:
54°
Step-by-step explanation:
as you know that in the centre the total angle is 360 degrees and as it is a regular pentagon so the angle of each will be equal which is 360 by 5 which is equal to 72.
in a triangle sum of all angles is equal to 180 degree so the sum of other two angles is 180 - 72 which is equal to 108.
as you know that it is a regular pentagon on hands both the sides will be equal and hence both the angles will be equal to x is equal to 108 so x is equal to 54.
Similar questions