make an equation - example, two sides are 2x+60-4x+5=180 equal them to 180 because every triangle is equal to 180 when you find x, multiple two times x plus 60, s x plus 5 thats the only thing i know about it
24) all angles are equal and the angles add up to 180, so 180/3, x=60. 25) we already know that the middle angle is 90. So same as above all angles add up to 180. 2x+90+x=180. 3x=90, x=30. 26) again adds up to 180. x + x + 25= 180. 2x=155, x=77.5.
