solve this sum.It is from understanding quadrilateral
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2(abo)+118°=180
abo =62°\2
=31°
2). 2ado+62=180
2 ado=180-62
ado=59°
3] same as 2nd
abo =62°\2
=31°
2). 2ado+62=180
2 ado=180-62
ado=59°
3] same as 2nd
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The triangles in the rectangle are isosceles, therefore, the diagonal sides have the same lengths and same angles at the corners of the rectangle.
i) ∠ABO
= (180° - 118°) ÷ 2
= 31°
ii) ∠ADO
= ∠ABO
= 31°
iii) ∠OCB
= ∠ADO
= 31°
i) ∠ABO
= (180° - 118°) ÷ 2
= 31°
ii) ∠ADO
= ∠ABO
= 31°
iii) ∠OCB
= ∠ADO
= 31°
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