1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
klio [65]
3 years ago
15

△DEF

Mathematics
2 answers:
ruslelena [56]3 years ago
6 0

Answer:

Given:

In Δ DEF, ∠3=∠4.

To prove:→ DE=E F

Proof:

1.  ∠3=∠4------[Given]

2. →∠1 and ∠ 3 are Supplementary to each other.

(a)⇒∠1 + ∠ 3=180°

 →∠2 and ∠ 4 are also Supplementary to each other.

(b)⇒∠2 + ∠ 4=180°

                                    --------------------[Exterior sides in opposite rays]

3. From 1 , a and b

 ⇒∠ 1 = ∠ 2-------[Two Angles Supplementary to equal Angles are equal to each other]

4.

 If two angles of a Triangle are equal , then side opposite to these angles are equal.

Lady_Fox [76]3 years ago
3 0

Answer:

Two ∠'s supplementary to equal ∠'s are =

Step-by-step explanation:

DF=EF means that the triangle is isosceles.

This means that the base angles are equal to each other.

Because the base angles are equal to each other, their supplementary must also be equal.

You might be interested in
Plz help asap really need it
luda_lava [24]

Answer:

9

Step-by-step explanation:

perfect square sholud be (a+b)^{2}

so (w+3)*(w+3) is perfect square and extention of it is =>w*w+6w+9

6 0
2 years ago
Hugo took these steps to solve the system of equations.
KengaRu [80]

Answer:

C

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Chi has a rectangular window planter that is 8 inches high, 18.5 inches long, and 7 inches wide. If she fills the planter halfwa
Ghella [55]
Your answer would be 518 Cubic inches.

18.5 * 7 = 129.5
129.5 * 8 = 1036 (Full planter aka not what we want)
If we take the height and divide it be 2 then we would get 4in (halfway full)
 So 129.5 * 4 = 518 Cu.

I hope I helped!
4 0
3 years ago
What are the solutions to the equation?
nalin [4]

Solutions are 3 and - 5.

Step-by-step explanation:

Step 1:

Given equation is 3x² + 6x = 45. Factorize the equation to get the solutions.

⇒ 3x² + 6x - 45 = 0

⇒ x² + 2x - 15 = 0

⇒ x² + 5x - 3x - 15 = 0 (Product and Sum Method where product of coefficients = - 15 and sum = 2)

⇒ x (x + 5) - 3(x + 5) = 0

⇒ (x - 3)(x + 5) = 0

⇒ x = 3, - 5

7 0
3 years ago
Which formula is correct ?
larisa86 [58]

Answer:

The first answer choice

Step-by-step explanation:

Formula for volume of a rectangular pyramid is V=lwh/3

6 0
2 years ago
Other questions:
  • What is 1 gallon into liters
    11·2 answers
  • The length of the hypotenuse of a right triangle is 137 units. The length of one leg of the triangle is 105. Gina wrote the foll
    15·2 answers
  • A jar contains, cardinal and
    7·1 answer
  • The school cafeteria sells three different types of sandwiches: chicken, turkey,
    15·1 answer
  • Help plzzzzzzz <3333
    15·2 answers
  • Find the value of x​
    7·1 answer
  • What are all of the values?
    9·1 answer
  • Pls help number 1 - 4
    10·2 answers
  • Answer this correctly and i will give brainliest
    9·2 answers
  • Karlie has a collection of quarters, dimes, and nickels that equal $2.70. If she has 7 quarters and 7 nickels, how many dimes do
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!