Answer:
see explanation
Explanation:
The sum of the 3 angles in the triangle = 180°
Sum the 3 angles and equate to 180, that is
2k + k + 45 = 180
3k + 45 = 180 ( subtract 45 from both sides )
3k = 135 ( divide both sides by 3 )
k = 45
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Thus 2k = 2 × 45 = 90
The 3 angles are 45°, 45° and 90°