Proving / Properties of Chords and SSS

Question

A.

Given: In circle A, radius AB bisects chord CD at point E.

Prove AB is perpendicular to CD

B.

Using circle A, prove that AF=AG, given that BC is congruent to ED.

Answer 1

You need a figure, but for Part A, two radii, a common altitude and the bisected segments will give you SSS which makes the 2 triangles right triangles.

In B we need to know where F and G are.