Ineed to know what the value of x is and what type of triangle is.

Triangles equal a total of 180°. Add the angles together equal to 180°.

x= unknown angle

x + 13° + 154°= 180°
x + 167= 180
subtract 167 from both sides
x= 13°

ANSWER: x=13° which means this is an isosceles triangle with two equal angles of 13°.

Hope this helps! :)

The sum of angles in  a triangle = 180°
So, x+13+154=180
x=180-(167)=13°
This triangle has 154° angle, so it is obtuse, two angles are the same, so it is a isosceles triangle.

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