Review for 3.08 DBA

Vertical angles

Angles that are across from each other when two lines intersect.

Flow chart proof

A diagram that contains the steps of the proof and the justification for each one.

midsegment

A segment where both endpoints lie at the midpoint of two opposite sides of a figure.

Two column proof

A statement column and a justification column.

Paragraph proof

A step-by-step proof with statements and their justifications written in complete sentences.

parallelogram

A type of quadrilateral with four important properties.

What are the four centers to the triangle and what do they represent?

Centroid, orthocenter, incenter, and circumcenter. All of these centers represent the point of intersection between lines or segments constructed from the triangle.

Midsegment of a triangle theorem.

states that a segment connecting the midpoints of two sides of a triangle is parallel to the third side and its length is equal to half the length of the third side.

What are the properties that all triangles have?

three sides