Geometry Formulas and Such

Question 1

what is an equilateral triangle?

Accepted Answer

a triangle with all equal sides

Question 2

what is the formula for the area of a rhombus?

Accepted Answer

A=½d1d2, A=bh

Question 3

congruent segments are when:

Accepted Answer

segments have the same measure

Question 4

what is the formula for finding slope-intercept form of a line?

Accepted Answer

y=mx+b

Question 5

what is a triangle with no equal sides called?

Accepted Answer

scalene

Question 6

what is the formula for the area of a sector of a circle?

Accepted Answer

A=(𝒙÷360)×πr2

Question 7

what is the formula for finding the perimeter of a square?

Accepted Answer

P=4s

Question 8

true or false: adjacent angles have no common interior points

Accepted Answer

true

Question 9

what is the formula for finding the geometric mean of 2 positive numbers?

Accepted Answer

x=√ab

Question 10

what is a triangle with 2 equal sides called?

Accepted Answer

isoceles

Question 11

adjacent arcs have how many points in common?

Accepted Answer

1

Question 12

what is the trigonomic ratio of sine?

Accepted Answer

opposite/hypotenuse

Question 13

what is the formula for component form?

Accepted Answer

v=<x2-x1, y2-y1>

Question 14

what is the trigonomic ratio of tangent?

Accepted Answer

opposite/adjacent

Question 15

what is the formula for the area of a triangle?

Accepted Answer

A=(b×h)÷2

Question 16

what is the formula for the area of a rectangle?

Accepted Answer

A=l×w

Question 17

what can the Law of Sines be used to find?

Accepted Answer

side lengths and angle measures for any triangle

Question 18

what is the formula for finding the midpoint on a number line?

Accepted Answer

M=a+b/2

Question 19

what is the formula for finding the distance on a number line?

Accepted Answer

d=|a-b|

Question 20

what is the measure of a line?

Accepted Answer

180°

Question 21

what is the formula for finding the midpoint on a coordinate plane?

Accepted Answer

M=(x1+x2/2, y2-y1/2)

Question 22

what is the formula for the area of a trapezoid?

Accepted Answer

A=½h(b1+b2)

Question 23

an angle with a vertex in the center of the circle is called a:

Accepted Answer

central angle

Question 24

what is the law of sines?

Accepted Answer

sinA/a = sinB/b = sinC/c

Question 25

a vector describes:

Accepted Answer

magnitude and direction of a quantity

Question 26

how do you know if a vector is in standard position?

Accepted Answer

if the initial point is at the origin

Question 27

perpendicular lines, rays, and segments form what angle?

Accepted Answer

right

Question 28

what is the slope formula?

Accepted Answer

m=𝒚2-𝒚1/𝒙2-𝒙1

Question 29

supplementary angles have a sum of:

Accepted Answer

180°

Question 30

what are the law of cosines?

Accepted Answer

a2=b2+c2-2bccosA, c2=a2+b2-2abcosC, b2=a2+c2-2accosB

Question 31

what is a chord?

Accepted Answer

a segment with endpoints on a circle

Question 32

what is the formula for the area of a circle?

Accepted Answer

A=πr2

Question 33

what is the formula for finding the distance on a coordinate plane?

Accepted Answer

d=√(x2-x1)2+(y2-y1)2

Question 34

what is the trigonomic ratio of cosine?

Accepted Answer

adjacent/hypotenuse

Question 35

what is another name for the height of a triangle in a regular polygon?

Accepted Answer

apothem

Question 36

what is the formula for finding the total surface area of a cone?

Accepted Answer

S=πrl+πr2

Question 37

an angle is formed by:

Accepted Answer

2 noncollinear rays that have a common endpoint

Question 38

what is the measure of an acute angle?

Accepted Answer

below 90°

Question 39

complementary angles have a sum of:

Accepted Answer

90°

Question 40

what is the Pythagorean theorem?

Accepted Answer

a2+b2=c2

Question 41

what is an equiangular triangle?

Accepted Answer

a triangle with all equal angles

Question 42

what is the measure of an obtuse angle?

Accepted Answer

91°-179°

Question 43

an arc is a portion of a circle defined by:

Accepted Answer

2 endpoints

Question 44

what is the formula for the circumference of a circle?

Accepted Answer

C=2πr, C=πd

Question 45

which of the following are special right triangles?

Accepted Answer

45-45-90, 30-60-90

Question 46

a polygon with n (13 or more) sides is called an:

Accepted Answer

n-gon

Question 47

what are the characteristics of a ray?

Accepted Answer

one endpoint and extends infinitely on the other side

Question 48

what is the formula for arc length?

Accepted Answer

l=𝒙/360×2πr

Question 49

a secant is a line that intersects a circle in:

Accepted Answer

2 points

Question 50

what is the formula for the area of a parallelogram?

Accepted Answer

A=b×h

Geometry Formulas and Such

Questions 50

Geometry Formulas and Such

Questions 50