The other two angles are 105 and 75degrees
For an isosceles trapezoid, the sum of adjacent angle of the trapezium is 180degrees
Let the unknown sides be x and y
If the two known angles are 105 and 75degrees, to get the unknown sides, we will use the expressions;
- x + 105 = 180
- y + 75 = 180
Get the value of x;
x + 105 = 180
Subtract 105 from both sides
x + 105 - 105 = 180 - 105
x =75degrees
Get the value of y
y + 75 = 180
Subtract 75 from both sides
y + 75 - 75 = 180 - 75
y =105degrees
Hence the other two angles are 105 and 75degrees
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