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Alchen [17]
3 years ago
13

When writing a geometric proof, which angle relationship could be used alone to justify that two angles are congruent?

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
8 0

Answer:

Vertical angles are always congruent.

Step-by-step explanation:

Vertical angles are always congruent, but congruent angles do not have to be vertical. Any two angles with the same angle measurement are considered congruent by definition.

Imagine (or draw):

an X forming 2 pairs of vertical angles. ∠1 is to the left, ∠2 is on top, ∠3 is to the right, and ∠4 is on the bottom. Vertical angles are always congruent because ∠1 and ∠2 are supplementary, meaning that their measures add to 180 degrees. The measures of ∠2 and ∠3 also add to 180 degrees. This means that:

m∠1+m∠2=180 and m∠2+m∠3=180.

Using the Transitive Property, it becomes m∠1+m∠2=m∠2+m∠3.

If you subtract the measure of ∠2 from both sides,

it becomes m∠1=m∠3

Allisa [31]3 years ago
5 0
Vertical angles i believe is the right answer to this problem
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Answer:

u = -45

Step-by-step explanation:

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-\frac{9}{2} *-\frac{2}{9}u = 10 * -\frac{9}{2}

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3 years ago
Uh i need help with those 3, will give brainliest, thanks!
rusak2 [61]

Answer:

26 = G. 27 = A. 28 = J

Step-by-step explanation:

26} A Nickle = 5 cents. A Dime = 10 Cents.

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Way #2: 10 + 10 + 10 = 30

Way #3: 10 + 5 + 5 + 5 + 5 = 30

Way #4: 10+ 10+ 5 + 5 = 30

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Way #1: 1+1+1+1+1+5+ 10 = 20

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Way #3: 1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1+1 = 17

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5 0
2 years ago
Doors for the small cabinets are 11.5 inches long. Doors for the large cabinets are 2.3 times as long as the doors for the small
tiny-mole [99]
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3 years ago
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Answer:

80%

Step-by-step explanation:

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Answer:

-2.6, -0.4, 0, 0.8, 1.2

Step-by-step explanation:

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