Find the measure of angle b.

#64 = 18

#65 = 30

Step-by-step explanation:

Remember, the sum of all the angles in a triangle is equal to 180 degrees...

#64

123+ 39 = 162

180-162 = 18

#65

75 + 75 = 150

180-150 = 30

18 and 30 degrees

Step-by-step explanation:

< a + <b + <c = 180 degrees

< b = 180 - (123+39) = 18 degrees

<b = 180 - 2(75) = 30 degrees

£56

step-by-step explanation:

u divide 24 by 3 and u get 8 so if u do 8 time 7 or 8+8+8+8+8+8+8 u get 56 and 56 divided by 7 is 8.

geometry: triangles

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answers archive

call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584