• Shuffle
Toggle On
Toggle Off
• Alphabetize
Toggle On
Toggle Off
• Front First
Toggle On
Toggle Off
• Both Sides
Toggle On
Toggle Off
Toggle On
Toggle Off
Front

### How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

Play button

Play button

Progress

1/29

Click to flip

### 29 Cards in this Set

• Front
• Back
 circle the set of points in a plane at a given distance from a given point chord a segment whose endpoints lie on a circle secant a line that contains a chord diameter a chord that contains the center of a circle diameter is the biggest chord, and (r*2) tangent a line in the plane of a circle that intersects the circle in exactly one point sphere with center O and radius r, the set of all points in space at a distance from point O congruent circles/spheres circles/spheres that have congruent radii concentric circles circles that are in the same plane and have same center if a line is tangent to a circle... then the line is perpendiular to the radius drawn to the point of tangency tangents to a circle.... from a point are congruent if a line in the plane of a circle is perpendicular to the radius at its outer endpoint... then the line is tangent to the circle common tangent a line tangent to each of two coplanar circles common internal tangent intersects segments joining centers common external tangent do not intersect segment joining centers tangent circles coplanar circles tangent to the same line at the same point central angle angle whose vertex is at the center of the circle semi-cicles if y and z are endpoints of a diameter, the two arcs are called semi-circles measure of a minor arc measure of its central angle measure of a major arc 360-minor arc arc add post measure of the arc formed by two adjacent arcs is the sum of the measures of the two arcs congruent arcs arcs in the same or congruent circles that have equal measure in the same circle or congruent circles, two minor arcs are congruent IFF... their central angles are congruent in the same or congruent circles, congruent arcs... have congruent chords (and the converse) a diameter or radius that's perpendicular to a chord... bisects the chord and its arc in the same or congruent circles, chords equidistant from the center... are congruent (and congruent chords are equidistant from the center) in the same or congruent circles, chords equidistant from the center... are congruent (and congruent chords are equidistant from the center) 45-45-90 the hypotenuse is root 2 times as long as the leg 30-60-90 the hypotenuse is twice as long as the shorter leg, and the longer leg is root 3 tiems as long as the shorter leg Triples 3,4,5 5,12,13 10,24,26 8,15,17 7,24,25