4-8 Congruent Lines

Concurrent: When 3 or more lines intersect at 1 point, that point is called the point of concurrency.

Thm 4-6: Perpendicular bisectors of the sides of a triangle are congruent at 1 point equidistant from the vertices.

Thm 4-7: The angle bisectors of a triangle are concurrent at a point equidistant from the sides.

Median of a Triangle: A segement whose endpoints are a vertex and the midpoint of the side opposite the vertex.

Altitude: A Perpendicualr segment from a vertex to the line containing the side opposite the vertex.

Problem 1-1

What what the title of the last page?

4-5 Indirect Proofs a>

Indirect Proofs a>

None of the above

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