Question #e2a86

1 Answer
Mr. Danger
Jun 1, 2017

Segment AB.

Explanation:

The base of a triangle is the side perpendicular to (intersecting at a 90º angle with) the altitude that is said to be the the height.

If you want to think of it in a less abstract way, just turn your paper to rotate the triangle so that the height CW is going straight up. The line resting on the bottom (AB in this case) is the base.

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