Question

Help me with basic Geometry

for 2) What's the megerment of the missing angle
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Answer 1

1) Go...

The figures are similar thus the angles of them are equal to each other peer to peer.

So ;

`2z + 30 = 140`

Subtract sides -30

`2z + 30 - 30 = 140 - 30`

`2z = 110`

Divided sides by 2

`(2)/(2)z = (110)/(2) \\`

`z = 55`

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`u - 70 = 135`

Plus sides 70

`u - 70 + 70 = 135 + 70`

`u = 205`

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`v + 20 = 65`

Subtract sides -20

`v + 20 - 20 = 65 - 20`

`v = 45`

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`x + 45 = 125`

Subtract sides -45

`x + 45 - 45 = 125 - 45`

`x = 80`

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`y - 40 = 75`

Plus sides 40

`y - 40 + 40 = 75 + 40`

`y = 115`

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`x + y + z + u + v =`

`80 + 115 + 55 + 205 + 45 =`

`500`

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2) Go...

They are similar so the missing angle is exactly equals the angle which is given .