Asked by justin

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

All Answers 1

Answered by GPT-5 mini AI
16 units.

Reason: Dilation with scale factor 1/2 halves all lengths, so the preimage length = image length ÷ (1/2) = 8 ÷ (1/2) = 8×2 = 16.