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AlladinOne [14]
3 years ago
8

∆ABC is an isosceles triangle in which angles B and C are congruent.If m∠ B = (4x + 10) ° and m∠C = (x+34)°, find the measure of

angle A.
Mathematics
2 answers:
Ipatiy [6.2K]3 years ago
8 0
<span> isosceles triangle in which angles B and C
so 

</span>m∠ B = <span>m∠ C
</span>4x + 10 = <span>x+34
3x = 24
  x = 8

</span><span>m∠ B = (4x + 10) = 4(8) + 10 = 32+10 = 42
</span>m∠ B = m∠ C = 42
m< A = 180 - 2(42)
m< A = 180 - 84
m< A = 96

answer
m< A = 96
snow_lady [41]3 years ago
7 0
Measurement of angle A should be 96 degrees, because if angles B and C are equal then you need to set them equal to each other to find x which is 8. Then plug 8 into the equations and solve. Both angles B and C will equal 42 degrees. Then add them together to get 84 and subtract it from 180(because the angles of a triangle will always equal 180) to find the angle measurement of angle C and it will be 96.
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