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Can someone please help me on number 5 and explain ?

Can someone please help me on number 5 and explain ?-example-1

1 Answer

3 votes
Hello!

First you have to find angle BDA

The angles in a triangle add to 180

Subtract the know angles to get the missing one

180 - 60 - 75 = 45

Angle BDA = 45
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Next you find what angle ACD measures

The angles in a triangle add to 180

Subtract the know angles to get the missing angle

25 + 45 = 70

180 - 70 - 60 = 50

Angle ACD is 50
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Now you can find angle CBD

The angles in a triangle add up to 180

Subtract the know angles to get the unknown one

180 - 25 - 50 = 105

Angle CBD is 105
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Since Triangle DBC has one obtuse angle it is an obtuse triangle

The answer is A) obtuse triangle

Hope this helps!
User Mythz
by
7.8k points

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