Special Segments in Triangles

Front

What is a median in a triangle?

Back

A median is a line segment that connects a vertex of a triangle to the midpoint of the opposite side.

Front

What is a midsegment in a triangle?

Back

A midsegment is a line segment that connects the midpoints of two sides of a triangle.

Front

What is an altitude in a triangle?

Back

An altitude is a perpendicular segment from a vertex to the line containing the opposite side.

Front

What is a perpendicular bisector?

Back

A perpendicular bisector is a line that divides a segment into two equal parts at a 90-degree angle.

Front

What is an angle bisector?

Back

An angle bisector is a ray that divides an angle into two equal angles.

Front

In an obtuse triangle, which special segment can be outside of the triangle?

Back

Altitudes can be outside of an obtuse triangle.

Front

If AD and DC are congruent sides and the length of AD is 4, what is the length of DC?

Back

4

Front

If m<LJK = 28°, what is m<MLK if they are vertical angles?

Back

124°

Front

What is the relationship between the lengths of the segments created by a median?

Back

The median divides the opposite side into two segments that are equal in length.

Front

How do you find the length of a midsegment in a triangle?

Back

The length of a midsegment is half the length of the side it is parallel to.