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Sec 1.5 CC Geometry – Congruence Name: Any two congruent figures can be mapped onto one another using a series of rigid or isometric transformation (reflections, rotations, and translations). – See GSP Lab (Transformations) – Each of the following pairs of figures shown below are congruent. Write a congruence statement for each and tell whether or not a reflection would be needed to map the pre-image onto the image. 1. 2. 3. 4. Given the following congruencies find the requested unknown angle. 5. ABC ONM 42° 6. GEM TOR 57° (3x+20)° 50° mMNO (3x)° mGEM Given the following congruencies find the requested unknown side. 7. ⊿TRI ≅ ⊿ANG 8. MTH FUN 17 8 UF GN Angle Puzzles. (angles are not drawn to scale) 9. Find m BCE 10. Find Given: 1 bisects DAB m DAB 50 ABC is a right angle m GFH Given: GH bisects FGI m FGI 60 m GIH 75 FHI is a right angle G ● B ● E ● F ● ● C A ● m BCE ● D H● m GFH ● I