Flashcards: Triangle Center and Polygon Properties — 10 cards

Perpendicular bisectors — definition?

Lines dividing sides into two equal parts at 90°.

Perpendicular bisector — definition?

Divides a side into two equal parts at 90°.

Triangle centers — role?

Key points where special lines intersect, defining triangle properties.

Circumcenter — role?

Intersection of perpendicular bisectors, center of circumscribed circle.

Angle bisector theorem — statement?

Bisects opposite side proportionally to adjacent sides.

Triangle centers — examples?

Circumcenter, incenter, centroid, orthocenter.

Centroid — where?

Intersection of medians, divides medians 2:1.

Incenter — role?

Intersection of angle bisectors, center of inscribed circle.

Orthocenter — position?

Intersection of altitudes, inside or outside triangle.

Polygon types — basis?

Number of sides.