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Virty [35]
3 years ago
13

Here you go the brainless

Mathematics
2 answers:
zhenek [66]3 years ago
8 0
Scale factor = 12 ÷ 6 = 2

61 ÷ 2 = 30.5 units
Alexandra [31]3 years ago
4 0
So if you look at the bigger trapezoid you can see that AB, BC, and CD are all the same measurement. So the same thing would apply to the smaller trapezoid. So EF= 6, FG= 6, and GH= 6. When you find the perimeter you just add all the measurements. So...
6 + 6 + 6 + 12.5 = ?
12 + 6 + 12.5 = ?
18 + 12.5 = 30.5
So 30.5 is your answer. I hope this helps love! :)
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A line segment BK is an angle bisector of ΔABC. A line KM intersects side BC such, that BM = MK. Prove: KM ∥ AB.
weqwewe [10]

Answer:

∠BKM= ∠ABK

Therefore AB ║KM (∵ ∠BKM= ∠ABK  and lies between AB and KM and BK is the transversal line)

m∠MBK ≅ m∠BKM (Angles opposite to equal side of ΔBMK are equal)

Step-by-step explanation:

Given: BK is an angle bisector of Δ ABC. and line KM intersect BC such that, BM = MK

TO prove: KM ║AB

Now, As given in figure 1,

In Δ ABC, ∠ABK = ∠KBC (∵ BK is angle bisector)

Now in Δ BMK, ∠MBK = ∠BKM (∵ BM = MK and angles opposite to equal sides of a triangle are equal.)

Now ∵ ∠MBK = ∠BKM

and  ∠ABK = ∠KBM

∴ ∠BKM= ∠ABK

Therefore AB ║KM (∵ ∠BKM= ∠ABK and BK is the transversal line)

Hence proved.  

8 0
3 years ago
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Arte-miy333 [17]

Answer:

Is this a question about the laws of angle of incidence or is it just coordinates

Step-by-step explanation:

7 0
2 years ago
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svetlana [45]

Answer:

Linear Pair:

∠ 1 and ∠ 2

Vertical Angles:

∠ 1 and ∠ 3

Supplementary Angles:

∠ 7 and ∠ 6

Step-by-step explanation:

Linear Pair:

A linear pair of angles is formed when two lines intersect.

Two angles are said to be linear if they are adjacent angles formed by two intersecting lines.

The measure of a straight angle is 180 degrees, so a linear pair of angles must add up to 180 degrees.

Example

∠ 1 and ∠ 2           ∠ 8 and ∠ 5 ,etc

Vertical Angles:

The angles opposite each other when two lines cross.

They are always equal.

Example

∠ 1 and ∠ 3           ∠ 8 and ∠ 6 ,etc

Supplementary Angles:

Two Angles are Supplementary when they add up to 180 degrees.

Examples  two angles (140° and 40°)

All Linear pair are Supplementary angles

Example

∠ 7 and ∠ 6           ∠ 8 and ∠ 5 ,etc

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3 years ago
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FromTheMoon [43]

Answer:

it is B. -11 and 47

Step-by-step explanation:

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