Question

Determine the value of x in the figure​

Answer 1

Solution:

• The sum of all the angles which stand on a straight line is 180°.
• Therefore,
• 2z + 140° = 180°
• or, 2z = 180° - 140°
• or, 2z = 40°
• or, z = 40° ÷ 2
• or, z = 20°

Answer:

z = 20°

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Thank you

Answer 2

180-140=40 (complementary angle)
2z=40
Z=40/2
Z=20