No not quite a right angle triangle but nearly.
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55 degrees.
70 degreesA right triangle has a right angle that measures 90 degrees, and the total number of degrees in a triangle is 180 degrees.180 - 90 leaves 90 for the other two, and 90 - 20 = 70
If it's an isosceles triangle and the apex angle is 70 degrees then the base angles will each measure 55 degrees
There are 6 numbers between 1 and 70 that are divisible by 11. These numbers are: 11; 22; 33; 44; 55; 66.
right triangle and the other angle would be 70 degrees. Hope I helped :)