find the value of x
explain it
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(c) Angle sum of a pentagon = 540°
(c) Angle sum of a pentagon = 540°⇒ 30° + x + 110° + 120° + x = 540° [∵ 180° – 70° = 110°; 180° – 60° = 120°]
(c) Angle sum of a pentagon = 540°⇒ 30° + x + 110° + 120° + x = 540° [∵ 180° – 70° = 110°; 180° – 60° = 120°]⇒ 2x + 260° = 540°
(c) Angle sum of a pentagon = 540°⇒ 30° + x + 110° + 120° + x = 540° [∵ 180° – 70° = 110°; 180° – 60° = 120°]⇒ 2x + 260° = 540°⇒ 2x = 540° – 260°
(c) Angle sum of a pentagon = 540°⇒ 30° + x + 110° + 120° + x = 540° [∵ 180° – 70° = 110°; 180° – 60° = 120°]⇒ 2x + 260° = 540°⇒ 2x = 540° – 260°⇒ 2x = 280°
(c) Angle sum of a pentagon = 540°⇒ 30° + x + 110° + 120° + x = 540° [∵ 180° – 70° = 110°; 180° – 60° = 120°]⇒ 2x + 260° = 540°⇒ 2x = 540° – 260°⇒ 2x = 280°⇒ x = 140°
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