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pentagon [3]
3 years ago
8

Pls help me with this math question pls its hard i want the explanation pls​

Mathematics
2 answers:
iris [78.8K]3 years ago
6 0
Straight line = 180 degrees so angle opposite a = 180-128 = 52
then triangle adds up to 180 degrees so a= 180-52-73 =55 degrees
agasfer [191]3 years ago
6 0

Answer:

Take the angle above 128° as x.

x = 180 - 128 (linear pair)

x = <u>5</u><u>2</u><u>°</u>

a = ?

a = 180 - ( 52 + 73 ) ( the angles in a triangle add up to 180° )

a = 180 - 125

a = <u>5</u><u>5</u><u>°</u>

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Review: Angle Bisectors
zmey [24]

Answer:

  • m∠AOC = 15°
  • m∠BOC = 15°

Step-by-step explanation:

Given the angle ∠AOB

It is stated that CO is the angle bisector of ∠AOB.

Given that ∠AOB = 30°

As we know that the angle bisector bisects the angle into two equal angles.

Thus, the angle bisector CO bisects the angle ∠AOB into two equal angles, which are:

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  • m∠BOC

as

∠AOB = 30°

Thus, the two formed angles i.e m∠AOC and m∠BOC by the angle bisector would be half of the angle bisector as the angle bisector bisects the angle ∠AOB into two equal angles.

Therefore,

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