Answer:
6
Step-by-step explanation:
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! :)
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