Quick Flashcards! Geometry Unit 12 Circles segments

This was my last minute studying for my test, not actually good study material 😞

Intersecting Chords

Products of the segments of chord = The product of the segments of other cord

(Segments are the two parts)

(This refers to their lengths)

Tangent Length

If two tangents are drawn from same point, then they are equal

Secant Segment Length (2 Secants)

The product of one secant's entire length and it’s external length is = the same thing of the other secant

Tangent-Secant

The product of the secant whole length and it’s external part is = Length of tangent²

(Whole)(External) = Tangent²

Circumference

C = Pi(d)

Area

A= pi(r)²

Arc length

Angle/360 = arc/circumference

One of these will be x, probably the arc (obviously)

Also, you will probably have to find circumference yourself

Sector Area

Angle/360 = Sector Area/Circle Area

Again, one will be x, probably sector Area.

Also you will probably have to find circle area yourself

Radian measure

Arc length/radius

Pi stays in the numerator

Properties

All radii are congruent

All diameters are congruent

If two chords are congruent, so are their intercepted arcs

Inscribed angles that intercept the same arc are congruent

Arcs between parallel chords are congruent

Tangent drawn from same point are congruent

Angle inscribed in semi circle is right angle

Quick definitions if u forgot!

Tangent: Segmant that touches outside of circle once

Secant: Segment that cuts circle at two points and goes outside of it

Chord: line segments joining an two points on circle

prob will add more later am lazy now even thought I have test in 3 periods!!!

I’m screwed

I made an extra flashcard on accident and didn’t feel like deleting it so hi im g and I love hannibal lecter ❤ (ALL versions 😈)