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3 years ago

Name a pair of alternate interior angles

Mathematics

2 answers:

Novosadov [1.4K]3 years ago

7 0

3 and 6 are alternate interior angles because they are both inside the parallel lines and are alternate to each other.

Hope this helps :)

Yanka [14]3 years ago

3 0

Angle 3 and angle 6, thank me later bb;)

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What is the area of triangle DEF?

FrozenT [24]

Answer:

$A=2\sqrt{14}\ units^2$

Step-by-step explanation:

we know that

Heron's Formula is a method for calculating the area of a triangle when you know the lengths of all three sides.

$A=\sqrt{s(s-a)(s-b)(s-c)}$

where

a, b and c are the length sides of triangle

s is the semi-perimeter of triangle

we have

$a=5\ units,b=6\ units,c=3\ units$

Find the semi-perimeter s

s= $\frac{5+6+3}{2}=7\ units$

Find the area of triangle

$A=\sqrt{7(7-5)(7-6)(7-3)}$

$A=\sqrt{7(2)(1)(4)}$

$A=\sqrt{56}\ units^2$

simplify

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3 0

3 years ago

Help plz:)))I’ll mark u Brainliest

rodikova [14]

Answe

Step-by-step explanation:

The interior angles of a triangle add up to 180. We know from the photo that there is a 90° angle and an 18° angle, and 90-18 is 72, so the other interior angle is 72°. The question is asking you to find the value of side x, so you'll need to use sin.

sin (72°) = x/16

x ≈ 15.2

4 0

3 years ago

HELPP!!!! Is the first one right? and if not can u correct it also can u help me on the other ones plz!!!!???

SpyIntel [72]

Answer:

69 noice

Step-by-step explanation:

8 0

3 years ago

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prisoha [69]

29 is the final answer.

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3 years ago

Solve. y = –4x + 10 y = –3x + 5

saw5 [17]

The answers in order are
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8 0

2 years ago

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