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solniwko [45]
3 years ago
14

Triangle DEF is shown below.

Mathematics
1 answer:
just olya [345]3 years ago
6 0

Answer:

A triangle similar to DEF will have an angle that measures 45 degrees, an angle that measures 65 degrees, and an angle that measures 70 degrees​

Step-by-step explanation:

Given

See attachment for complete question

Required

Angles of a triangle similar to \triangle DE F

First, calculate the angle at D

D + 110^o = 180^o ---- angle on a straight line

Collect like terms

D  = 180^o - 110^o

D  = 70^o

Next, calculate the angle at F

F + 135^o = 180^o ---- angle on a straight line

Collect like terms

F  = 180^o -135^o

F  = 45^o

Lastly, the angle at E

D + E + F = 180^o --- angles in a triangle

Make E the subject

E = 180^o - D - F

E = 180^o - 70^o - 45^o

E = 65^o

<em>A triangle similar to </em>\triangle DE F<em> will have 45, 70 and 65 degrees as its angles</em>

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a=\dfrac{400}{21}

For b, we can use the Pythagorean theorem:

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390.0826 in fraction expanded form.
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The number 390.0826 in an expanded form is 300 + 90 + 8/100 + 2/1000 + 6/10000

<h3>How to write the number in an expanded form?</h3>

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390.0826

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Hence, the number 390.0826 in an expanded form is 300 + 90 + 8/100 + 2/1000 + 6/10000

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