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kolezko [41]
3 years ago
6

Find the values of a and b. The diagram is not to scale. Its not c

Mathematics
2 answers:
OlgaM077 [116]3 years ago
7 0

Answer:

Option A is correct : . a=115, b=71

Step-by-step explanation:

Consider the attached file.

AB is parallel to CD.

∠1+ a° = 180° (since sum of  linear pairs is 180°) ---(A)

And ∠1 = ∠2  because they are corresponding angles.

∠1 = ∠2 = 65°

Putting this value in (A)

⇒65°+ a° = 180°

⇒a° = 180°-65°

⇒a° = 115°

∠3+ 109° = 180°(since sum of  linear pairs is 180°) ---(B)

⇒∠3 = 180°-109°

⇒∠3 = 71°

Now, ∠3 = b° (because they are corresponding angles and corresponding angles are equal)

⇒∠3=  b°= 71°

Thus Option A is correct : . a=115, b=71

 



Luba_88 [7]3 years ago
3 0
Your answer would be A) .
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