3 years ago

The measures of two interior angles of a triangle are 108° and 54°. What is the measure of the third angle?

Mathematics

2 answers:

vivado [14]3 years ago

4 0

Answer:

Answer is 18 degree as per the question

Mariulka [41]3 years ago

4 0

Answer:

A 18

Step-by-step explanation:

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Answer:

1.41

Step-by-step explanation:

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0.75 + 0.66 = 1.41

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Step-by-step explanation:

In total, Sophie needs $230.40.

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Area and perimeter of geometric functions

SCORPION-xisa [38]

Answer:

C. 60

Step-by-step explanation:

From triangle ADB,

$|AD|^2+|BD|^2=|AB|^2$

$|AD|^2+16^2=20^2$

$|AD|^2=20^2-16^2$

$|AD|^2=400-256$

$|AD|^2=144$

$|AD|=\sqrt{144}$

$|AD|=12$

From triangle ADC,

$|CD|^2+12^2=15^2$

$|CD|^2+144=225$

$|CD|^2=225-144$

$|CD|^2=81$

$|CD|=9$

The perimeter is the distance around the figure.

The perimeter

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