Calculate the measure of each letter angle in the following figure (parallel line,segment or rays are denoted by thick matching a arrows).
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Answer:
x=180°-143° =37⁰
x+y=60° =>y-23°
(co interior angles) (alternate angles)
z=180°-120°=> z=120°. (co interior angles)
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Step-by-step explanation:
the given figure,
∠c=72
0
(Alternate angles)
∠a=55
0
(Corresponding angles)
But ∠b+∠c+55
0
=180
0
(Angles on one side of a straight line)
∠b+72
0
+55
0
=180
0
∠b+127
0
=180
0
∠b=180
0
−127
0
=53
0
Here, ∠a=55
0
,∠b=53
0
,∠c=72
0
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