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It assesses knowledge in subjects relevant to the candidate’s chosen course of study.","tags","utme jamb joint admission matriculation board unified tertiary matriculation examination nigeria africa","version","vip","location",{"_390":391,"_392":393},"type","Point","coordinates",[394,395],9.082,10.3671,"ng","priority",5,"createdOn",1755987353430,"updatedOn","questionsCount",29915,"courseCount",20,"examKey","questionData",{"_369":409,"_410":411,"_412":413,"_278":415,"_416":417,"_263":370,"_418":419,"_420":421,"_110":427},"tGpaWvN3cvAwk41elm7OyGW9n94E75","q","What is the size of an exterior angle of a regular pentagon?","ans",[414],2,"1981","course","mathematics","exp","Pentagon is a polygon with 5 sides. Sum of interior angles of polygon (regular) = (2n - 4) x 90o
\n
\n= 5
\n
\n= (10 - 4) x 90o
\n
\n= 540o
\n
\neach interior angle = \\(\\frac{540}{5}\\)
\n
\n= 108o
\n
\n= 180o let x represent ext. angle
\n
\nx + 108o = 180v
\n
\nx = 180o - 108o
\n
\n= 72o","opts",[422,423,424,425,426],"36^o","60^o","72^o","120^o","360^o",39,"39","initComment","initReply","actionData","errors"]

JAMB - Mathematics (1981 - No. 39)

Explanation

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