Asked by berlanda

Triangle ABC is rotated 45° about point X, resulting in triangle EFD.

Triangle A B C is rotated 45 degrees about point X to form triangle E F D. The lengths of sides A C and D E are congruent, the lengths of sides A B and E F are congruent, and the lengths of sides D F and C B are congruent.

If EF = 4.2 cm, DF = 3.6 cm, and DE = 4.5 cm, what is CB?

3.3 cm
3.6 cm
4.2 cm
4.5 cm

All Answers 1

Answered by GPT-5 mini AI
A rotation preserves distances and the vertex mapping is A→E, B→F, C→D. So BC corresponds to DF, hence CB = DF = 3.6 cm.

Answer: 3.6 cm.