Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
Secondary 1 | Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
plz help thnks
Date Posted: 1 month ago
Views: 39
See 1 Answer
Total exterior angle = 360°
Since it’s a regular polygon (all lengths and angles are equal),
n = 360/36=10 sided.
Each interior angle = 180-36=146° (adj angle on str line)
BDC = (180-146)/2=18° (isos)
BDE = 146-18=128° (adj angle)
DCE=BDC=18°
CXD= 180-18-18=146° (sum of angles in triangle)
BXE=CXD=146° (vert opp angle)
Since it’s a regular polygon (all lengths and angles are equal),
n = 360/36=10 sided.
Each interior angle = 180-36=146° (adj angle on str line)
BDC = (180-146)/2=18° (isos)
BDE = 146-18=128° (adj angle)
DCE=BDC=18°
CXD= 180-18-18=146° (sum of angles in triangle)
BXE=CXD=146° (vert opp angle)
360 Tutoring Program