Parts of Circles
A circle is the set of all points in a plane that are a given distance from this point.
What is the center?
These arcs are measured at less than 180 degrees.
What are minor arcs?
If a line is tangent to a circle, then it is _________ to the radius drawn to the point of tangency.
What is perpendicular?
Mrs. G's age.
35
This is a segment that has its endpoints on the circle.
What is a chord?
These arcs take up exactly half of a circle.
What are semicircles?
In a circle, if a diameter is perpendicular to a chord, it does this to its chord and its arc.
What is BISECTS the arc and the chord?
Mrs. G's maiden name.
Lopez
This is a chord that contains the center of the circle.
What is the diameter?
These arcs are measured at greater than 180 degrees.
What are major arcs?
In a circle, two minor arcs are congruent if and only if their corresponding _______________ are congruent.
What are chords?
Mrs. G. teaches Geometry and Algebra 1. True or False?
False
A central angle separates the circle into these.
What are arcs?
If two segments from the same exterior point are tangent to the same circle, then they are _____________.
What is congruent?
Mrs. G played volleyball in high school. True or False?
This is the name of a line that intersects a circle at exactly one point.
What is a tangent line?
This is an angle whose vertex is the center of the circle.
What is the central angle?
If a diameter is perpendicular to arc AC and its chord, and the measure of arc AC = 40 degrees, the measure of arcs AB and BC are __________________.
What is 20 degrees each.
Mrs. G was born in Mexico. True or False?
False