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Unformatted text preview: GD 1. Given 2. BGE DGE 2. Given 3. GF _|_ AC 3. GF perpendicular to A C (given) 4. GF GF 4. Reflexive Property 5. A GF & CGF are right angles 5. Definition of perpendicular. ( A line is perpendicular to another if it meets or crosses it at right angles ) 6 . A GF to C GF 6. ASA Congruence postulate 7. AG CG 7. Corresponding parts of congruent triangles are congruent 8. AGC is isosceles 8. Triangle AGC is isosceles 9. Therefore AGC is Is osceles 9. Base Angle Theorem ( if the base angles of a triangle are congruent, then the triangle is isosceles .) 10. 10....
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- Spring '11