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3 years ago

Please help me on this. constructing triangles

Mathematics

2 answers:

olasank [31]3 years ago

8 0

$answer = 105° \\ solution \\ let \: < def \: be \: x \\ x + 28 + 47 = 180°(sum \: of \: angle \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: in \: triangle) \\ or \: x + 75 = 180 \\ or \: x = 180 - 75 \\ x = 105° \\ hope \: it \: helps$

Goshia [24]3 years ago

8 0

Answer:

$105 \: \: \: degrees$

Step-by-step explanation:

Angles in a triangle = 180°

Let the DEF be = x

Let's solve now

$28 + 47 + x = 180 \\ 75 + x = 180 \\ x = 180 - 75 \\ x = 105$

hope this helps

brainliest appreciated

good luck! have a nice day!

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