Geometry

Question 1

Slope formula

Answer 1

y=mx+b

Question 2

Midpoint formula

Answer 2

((x1 + x2)/2, (y1 + y2)/2)

Question 3

Distance formula

Answer 3

d=√((x_2-x_1)²+(y_2-y_1)²)

Question 4

Density formula

Answer 4

Density=quantity/volume

Question 5

Parallel slope

Answer 5

When ex(y=1/2x+2) raise or lower the 2 for a parallel line

Question 6

Perpendicular slope

Answer 6

ex(y=1/2x+2) flip the fraction to be 2/1 and make it negative so the slope is -2 in this example

Question 7

Point slope form

Answer 7

y-y₁=m(x-x₁)

Question 8

Soh cah toa

Answer 8

The way to remember how the trig functions work

Question 9

Pythag

Answer 9

a^2+b^2=c^2

Question 10

Co functions

Answer 10

Sin has a cofunction of cos so if you had sin40 the cofunction would be cos50

Question 11

Median (triangle)

Answer 11

A line that connects an angle to the midpoint of the line across from it

Question 12

Centroid

Answer 12

The point where all medians meet

Question 13

Incenter

Answer 13

The point where all angle bisectors meet

Question 14

Orthocenter

Answer 14

The point where all altitudes meet

Question 15

Altitude

Answer 15

A line that connects an vertex to a line making a perpendicular angle

Question 16

Circumcenter

Answer 16

The point where all perpendicular bisectors meet

Question 17

Angle bisector theorem

Answer 17

An angle bisector that splits the triangle into 2 equal segments

Question 18

Exterior angle theorem

Answer 18

the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles

Question 19

Area

Answer 19

L•W= area

Question 20

Arc length

Answer 20

The length between 2 points on a curve

Question 21

Radians

Answer 21

The length of the radius put into the curve of a circle (the amount of radius’ to fully envelope the circle is equal to pi)

Question 22

Central angle

Answer 22

An gale at the center of a circle that connects to the circle