The line of the equation perpendicular to y=5 and cuts through (-5,-7) will be given by m(x-x1)=y-y1 where m=slope. from y=0x+5, the slope of the perpendicular line m=0, thus the equation will be: 0(x--5)=y--7 0=y+7 y=-7 The equation is y=-7
SO you know that triangles add up to 180. A right angle equals 90 so 180-90=90. And an isosceles triangle means that 2 angles are congruent. SO 90/2 = 45. The measure of the 2 acute angles are 45
