Geometry Unit 3 Flashcards

Chords, Radii, and Diameters

• Chords are segments whose endpoints lie on the circumference of a circle.
• Radii are segments from the center of the circle to any point on the circle; all radii of a circle are equal.
• Diameters are special types of chords that pass through the center of the circle, effectively being twice the length of a radius.

Congruence Statements in Circle O

• In Circle O, if the diameter CD intersects line AB at point P, forming a right angle, the following congruence statements hold:
  • AP is congruent to BP (AP = BP signifies symmetry about the diameter).
  • OC is congruent to OD (OC = OD demonstrates that both segments extend from the center of the circle to the endpoints of the diameter, thus equal in length).

Test your knowledge of key concepts in Geometry Unit 3 with these flashcards. This unit focuses on important definitions, properties of circles, and congruence statements related to chords, diameters, and radii. Get ready to reinforce your understanding of geometric principles!