Triangle rst was dilated by a scale factor of one-half. the image, triangle r's't', is an isosceles triangle, with each leg measuring 8 units.
point q is the center of dilation. isosceles triangle r s t was dilated to smaller triangle r prime s prime t prime. sides r s and r t are 8 units long.
what is the length of a leg of the pre-image, triangle rst?
4 units
8 units
16 units
20 units