Question

I don’t know what to do need fast please can someone help

Answer 1

Answer:

Step-by-step explanation:

From the markings AB = AC

<B = <C  because they are opposite equal sides.

Since B = 39 then C = 39

All triangles have 180 degrees.

x + B + C = 180

x + 39 + 39 = 180

x + 78  = 180

x + 78 - 78 =180 -78

x = 102

Answer 2

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Here side AB is equal to side AC (AB = AC) because of the markings placed in figure.

Next one is that $\angle$ B is equal to $\angle$ C. Here in information provided we've been given that angle B measures 39° thus angle C is also 39°. (Angle B = Angle C = 39°)

We know that sum of all angles in triangle is 180°.

$:\implies\tt{a + b + c = 180}$

$:\implies\tt{x + 39 + 39 = 180}$

$:\implies\tt{x + 78 = 180}$

$:\implies\tt{x = 180 - 78}$

$:\implies\tt{x = 102}$

• The measure of angle x is 102°.