Qstnid -C-1- Two Angles Of A Quadrilateral Are 89° And 113°. If The Other Two Angles Are Equal; Find The Equal Angles. - 16: Understanding Shapes (Including Polygons) Class 8 Maths - Icse-viii-mathematics

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ICSE-VIII-Mathematics

16: Understanding Shapes (Including Polygons) Class 8 Maths

with Solutions - page 6

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#1
Two angles of a quadrilateral are 89° and 113°. If the other two angles are equal; find the equal angles.
Ans : Let the other angle = x°
According to given,
89° + 113° + x° + x° = 360°
⇒ 2x° = 360° - 202°
⇒ 2x° = 158°
⇒ x° = 158/2
other two angles = 79° each