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Use the Following Figure to Find the Value of X - Mathematics

Sum

Use the following figure to find the value of x

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Solution

The sum of exterior angles of a quadrilateral

⇒ y + 80° + 60° + 90° = 360°

⇒ y + 230° = 360°

⇒ y = 360° – 230° = 130°

At vertex A,

∠y + ∠x = 180° (Linear pair)

x = 180° – 130°

⇒ x = 50°

Concept: Concept of Quadrilaterals - Sides, Adjacent Sides, Opposite Sides, Angle, Adjacent Angles and Opposite Angles
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APPEARS IN

Selina Concise Mathematics Class 8 ICSE
Chapter 16 Understanding Shapes
Exercise 16 (C) | Q 13 | Page 188
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