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melamori03 [73]
3 years ago
5

Help please!!!!!!!!!

Mathematics
1 answer:
REY [17]3 years ago
7 0

Since all triangle's angle's values add up 180 degrees, this means we have to make sure to angles add up to 180.

A. 75 + 35 = 110. 180 - 110 = 70 degrees.

B. This triangle is isosceles meaning 2 of its sides is the same length. In this case, the two sides add up to 140 (meaning they are both 70 degrees). 180 - 140 =  40 degrees.

C. I sadly don't know how to solve it.

D. This is another isosceles triangle. 180 - 36 = 144.

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In the image below, ABC ~ DEF What is the length of EF and the measure of D
Gwar [14]
If triangle ABC is congruent to triangle DEF, then EF = BC = 27
This is because BC and EF are the last two letters of ABC and DEF respectively. They match up and correspond, being congruent by CPCTC

-------------------------------------------------------------------------------------------------------------

Similarly, if triangle ABC is congruent to triangle DEF, then angle D = angle A = 49 degrees

The letter D and the letter A are the first letters of DEF and ABC respectively. So they match up and are congruent by CPCTC

CPCTC = Corresponding Parts of Congruent Triangles are Congruent

-------------------------------------------------------------------------------------------------------------

So in short, the answer is choice B) 27; 49

7 0
3 years ago
A teepee has a circular floor with a diameter of 4 yards. What is the floors circumference
serious [3.7K]

Answer:

12.56

Step-by-step explanation:

If a circle has a diameter of 4, its circumference is 3.14*4=12.56.

3 0
3 years ago
Solve.
Ray Of Light [21]

Step-by-step explanation:

let d+e=2 be equation 1

let d-e=4 be equation 2

lets make d the subject in equa 1

d = 2-e equation 3

put equation 3 in 2

2-e=4

e=2-4

e=-2

put e=-2 in equa 1

d-2=2

d=4

e is -2 and d is 4

5 0
2 years ago
Simplify 3<br><img src="https://tex.z-dn.net/?f=%203%20%7B%7D%5E%7B2%7D%20" id="TexFormula1" title=" 3 {}^{2} " alt=" 3 {}^{2} "
scoundrel [369]

3^2=9 three to the power of two equals nine

6 0
2 years ago
I need help with similar triangles
Alika [10]

Answer:

ΔGHI and ΔDEF  are similar by SSS criteria

Step-by-step explanation:

Consider triangle GHI and triangle DEF

In ΔGHI, GH = 2, HI =4 and GI = 3.5

In ΔDEF , DE =4, EF = 6 and DF = 7

GH/DE = 2/4 =1/2

HI/EF = 3/6 = 1/2

GI/DF = 3.5/7 = 1/2

The corresponding sides are in same ratio by SSS criteria

ΔGHI and ΔDEF  are similar


5 0
3 years ago
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