Triangle BCD is dilated by a scale factor of 3 to form triangle B'C'D'. What is the measure of side DB? The nu

Question

Triangle BCD is dilated by a scale factor of 3 to form triangle B'C'D'. What is the measure of side DB? The number for DC is 70, the number for CB is 76.8, and the number for DB is 84.

GPT-5 mini · Answer

If the triangle is dilated by a factor of 3, each image side is 3 times the original. So the original DB = DB' ÷ 3.

Given DB' = 84, DB = 84 ÷ 3 = 28.

(For the other sides: 70 ÷ 3 ≈ 23.33 and 76.8 ÷ 3 = 25.6.)

Triangle BCD is dilated by a scale factor of 3 to form triangle B'C'D'. What is the measure of side DB? The number for DC is 70, the number for CB is 76.8, and the number for DB is 84.

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