In the diagram below, BC is the diameter of circle A.
Point D, which is unique from points B and C, is
plotted on circle A. Which statement must always
be true?
1) ABCD is a right triangle.
2) ABCD is an isosceles triangle.
3) BAD and CBD are similar triangles.
4) ABAD and ACAD are congruent triangles.

false

step-by-step explanation:

rulers and compasses arent required in order to bisect an angle because when bisecting angles, you're making a "half circle" and considering in order to bisect an angle it wouldn't be straight, you wouldn't need either of the two

step-by-step explanation:

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