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saul85 [17]
3 years ago
15

An isosceles triangle has two angles that are each 57. Find the measure of the third angle

Mathematics
1 answer:
vova2212 [387]3 years ago
5 0

Answer:

The third angle measures 66°

Step-by-step explanation:

If we look at the properties of triangles, we will know that all triangles have angles that, when added together, equal 180 degrees. Because we already know the measurement of two of the angles, all we have to do is add them up and subtract the sum by 180.

57+57=114

180-114=66

We got 66 as the measure of the last angle. Now, to make sure we have the right answer, we are going to check our work. We do this by adding together all of the angle measurements. If they all add up to 180, then we know we have the correct answer.

57+57+66=180

We were correct! Now we have the measurements of all three of the triangle's angles. Great job!

I hope this is easy to understand. Please let me know if you need any more help. Have a great morning!

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Please help! i do not understand
prohojiy [21]

Answer:

90%

Step-by-step explanation:

Complimentary means the same. And adding them together would equal 90. Just as you would divide 90 by 3, each individual angle would be equal to 30.

6 0
4 years ago
Read 2 more answers
Guys please help me please
Elza [17]

y + 2007 = 5/29x

5/29 is the slope and 2007 is the y-intercept

4 0
3 years ago
you choose between red, blue, yellow or green wallpaper and purple or yellow carpet find the total number of possible outcomes w
suter [353]

Answer:

8 possible outcomes

Step-by-step explanation:

I'm going to list all the possibilities and then count them up.

First Word is the wallpaper color, Second is the carpet color.

Red + Purple, Red + Yellow, Blue + Purple, Blue + Yellow, Yellow + Purple, Yellow + Yellow, Green + Purple, Green + Yellow

After counting them up, we get 8. Therefore there are 8 possible outcomes.

<u>Another way is to multiply the possible outcomes for each event together, and you can get the total number of outcomes. For example, in this problem there is 4 wallpaper colors and 2 carpet colors, so when u multiply them u get 8 total outcomes. Hope this helped!</u>

3 0
2 years ago
Instructions: Find the missing side lengths. Leave your answers as radicals in simplest form.
gogolik [260]

Answer:

a = 4

b = 4

Step-by-step explanation:

This is a special right triangle with angle measures of 45° 45° 90° and side lengths x x x√2

3 0
3 years ago
What is the height of an isosceles trapezoid, if the lengths of its bases are 5m and 11m, and the length of a leg 4m
son4ous [18]

In the isosceles trapezoid ABCD, draw two perpendiculars AM and BL from A and B to the side CD.  

Now, LM = BA = 5 m  

CD = CL + LM + MD

       = CL + 5 + CL (CL = MD)

      = 2CL + 5  

But, CD = 11

Therefore, 2CL + 5 = 11

2CL = 11 - 5

       = 6

CL = 6/2 = 3m

MD = 3m

Now, consider the right triangle AMD.

We have,  

AM^{2} = AD^{2} - MD^{2}

                  = 4^{2} - 3^{2}

                  = 16 - 9

                 = 7

Hence, height of the isosceles trapezoid = AM = \sqrt{7} m

6 0
3 years ago
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