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Whole Numbers (Pri-1)

/ Numbers to 10 Admiralty Primary School / Homework (2018)
Online Sum of angles in polygon 01 Q2 - Missing angle problems 8 Find the angle marked x in each of these polygons. International School Singapore | Seoeun, Katie CHO 12 41° Q2 70° 107° 23 8 142° 85° 126 145 33° 340 x= 141 [4 TotalI couldn't understand thi question. Can anybody give me these answer plz...? I really need to speed up
Ka

November 15, 2018
 
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The total sum of internal angles of a 8 sided polygon = 1080°x + (180 - 41 ) + 107 + 145 + ( 180 - 34 ) + 126 + ( 360 - 142 ) + 70 = 1080x = 1080 - 951x = 129°  (ans)---The total sum of internal angles of a 6 sided polygon = 720°x + 33 + ( 360 - 85 ) + 23 + ( 360 - 85 ) + 33 = 720x = 720 - 639x = 81°  (ans)
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November 15, 2018
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