Answers

2016-01-19T17:58:27+08:00
Adjacent,opposite,base,apex and height

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a triangle is a polygon which has exactly three sides
2016-01-19T18:32:27+08:00
Parts of the Triangle
Vertices (points A, B, C)
Sides (lines AB, BC, CD)
Angles (∡A, ∡B, ∡C)
Altitude or Height - segment joining one of a vertex and perpendicular to its opposite side. (line segment AD)
Median - a segment joining one of the vertex to the midpoint of the opposite side. (line segment AE)

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