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360 subtracted by the number you know. then multiply it by 3.

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360 subtracted by the number you know. then multiply it by 3.

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(Rita)

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The total measure of angle is 360 degree and the opposite angle are the same so that is the first one then use 360 minus known angle times 2, use the answer divide by 2 to get other 2 angle.

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Subtract the angle that you know by 180
Joshua

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first of all the opposite angles will be the exact same degrees, so you would have 2 of the angles you already know, then you find the other 2 opposite angles by subtracting 360 from the sum of the 2 opposite angles we already know and then dividing it by 2. (do it to the other line also)

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You subtract the known angle by 180 -ANDREW 😃

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It has to be 360 minus the angle you know and then the answer divided by 3

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You subtract the known angle by 180

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Kieran

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If I know one angle than the I know the opposite angle is the same. If I multiple my angle by 2 then subtract it from 360 I will be able to fine the other 2 angles by dividing the remaining number by 2. Jarrett

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If I know one angle than the I know the opposite angle is the same. If I multiple my angle by 2 then subtract it from 360 I will be able to fine the other 2 angles by dividing the remaining number by 2. Jarrett

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You subtarct the know angle by 180 and do it find the other and do the same thung for it.

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You subtarct the know angle by 180 and do it find the other and do the same thung for it.

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The total measure of angle is 360 degree and the opposite angle are the same then use 360 minus the known angle times 2, use the answer you got and divide by 2 and you got the other 2 angles. Bill Chen

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The total measure of angle is 360 degree and the opposite angle are the same then use 360 minus the known angle times 2, use the answer you got and divide by 2 and you got the other 2 angles. Bill Chen

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You subtract the known angle by 180 and find the other angle and the step for the other side.

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To find the measure of 3 angles when having one of the values you subtract it by 180 so you get the angle on the other side of that angle. When u know that, u can rotate the image and find the other angles because one line is 180 degrees.

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The total of all angles is 360 degrees and the two angles are the same. So, I’ll multiply my angle by 2 then subtract the total measurement from 360.

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the opposite of known angle would be equal. multiply the known angle by two than subtract that from 360. Divide that by 2 and you should have the adjacent angle of the known angle _ Laura

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the opposite of known angle would be equal. multiply the known angle by two than subtract that from 360. Divide that by 2 and you should have the adjacent angle of the known angle _ Laura

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The opposite angle is the same measure as the angle that we already know. Angles that are left also have the same measure. To find out other two angles, subtract the measure of one of the angles that you know from 180°. Carina

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The opposite angle is the same measure as the angle that we already know. Angles that are left also have the same measure. To find out other two angles, subtract the measure of one of the angles that you know from 180°. Carina

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180 minus the measure you know, and you will get the other angle, the opposite side is the same angles. Jackson

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the angle in front of it(opposite angle) is the exact same measure as the one which is determined .  then you minus 180 by the determined angle .the answer will be the measure of the two other angle .

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the angle in front of it(opposite angle) is the exact same measure as the one which is determined .  then you minus 180 by the determined angle .the answer will be the measure of the two other angle .

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I will double it because the other side will have the same angle. With the sum, I subtract it from 360 degrees. There are 2 angles left so I divide the number i got from subtracting the sum from 360 degrees by 2. And both will be the angles with the other 1 given angle and the angle from the other side

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Since I know the measurement of this one angle, i know that its opposite angle also has that measurement. To get the adjacent angle, subtract that measurement from 180°[those two angles form a line, so that's a straight angle(180°)]. And the last angle will be same as the measurement of the previous angle.                                                                     -Vivian                                        

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Since I know the measurement of this one angle, i know that its opposite angle also has that measurement. To get the adjacent angle, subtract that measurement from 180°[those two angles form a line, so that's a straight angle(180°)]. And the last angle will be same as the measurement of the previous angle.                                                                     -Vivian                                        

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If I know one of the angle then I know the opposite angle's measure. Then you add them together and subtract it from 360 because I know that all the 4 angles add up together equal to 360. Divide the answer by two to get the other two angles. 

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If I know one of the angle then I know the opposite angle's measure. Then you add them together and subtract it from 360 because I know that all the 4 angles add up together equal to 360. Divide the answer by two to get the other two angles. 

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Hanas

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I can subtract the measure of the angle that I know from 180. I now have the measure of the angle beside the one that I knew. I can repeat this process and get all of the angles.

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The one in front of the angle we know is the same. The other ones are supplementary angles with those 2. And the total is 360

Ali

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I know one angle (angle 1), and since I know opposite angles are the same, the opposite angle that I already know would be the same (angle 2) . Then take 180 degrees and subtract by the angle I know, and I’ll get angle 3. Angle 4 should be the opposite angle of angle 3 so angle 4 would be the same as angle 3. 

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I know one angle (angle 1), and since I know opposite angles are the same, the opposite angle that I already know would be the same (angle 2) . Then take 180 degrees and subtract by the angle I know, and I’ll get angle 3. Angle 4 should be the opposite angle of angle 3 so angle 4 would be the same as angle 3. 

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Cherie