Geometry Final

MidPoint Formula

(x1+x2/2,y1+y2/2)

Distance formula

√(x2-x1)²+(y2-y1)

Conjecture

an educated guess/statement believed to be true based on patterns and examples.

Supplementary

Add up to 180 degrees

Congruent

Equal in measure

Slope Formula

y2-y1/x2-x1

Point slope form

y-y1=m(x-x1)

What must be true about the slopes of 2 perpendicular lines, neither of which is vertical?

Their slopes must be negative reciprocals of each other.

T=What

Translation

r=What

rotation

R=What

Reflection

Name the point of congruence of the angle bisectors.

Incenter

Where is the circumcenter of any given triangle?

The point equidistant from the 3 vertices.

Perpendicular bisectors of the sides.

Circumcenter

Bisectors of the angles.

Incenter

Medians

Centroid

Lines containing the altitudes.

Orthocenter