What is the point of concurrency of hte perpendicular bisectors in a triangle called?

 i need the answer

which fact is not sufficient to show that planes R and S are perpendicular?

FJ is contained in plane R, BC and DE are contained in plane S, and FJ, BC, and DE intersect at A. its hard for me

What are all the rules/laws of a cirlce with intercepting lines, like medians and all those things?

I dont understand when there's a cirlce and multiple lines crossing what all the rules are for the ratio's of the lines, I remember learning something was one third of something else ? But i dont...

what are some shapes that have at least 1 set of parallel sides and have a name

like square,rectangle,and trapazoid

Which point or points do NQ and PM have in common?

geometry: one endpoint of PQ is (-2,4). the midpoint of PQ is M (1,0).

 explain how to find the PQ.

What's a ray?

Identifying points, lines segments and rays  

If the sum of two pages is 19 and the sum of the next is 2, what page was I reading?

I noticed that the sum of the digits of the number on the page I was reading was 19, and the sum of the next digits on the page was 2. What was the number of the page I was reading?

Reduction of inside diameter of a steel hoop.

Hello, I need to reduce the inside diameter of the 5mm thick, flat bar, steel tuning hoop on a conga drum and would like to know how to calculate exactly how much material I need...

A cube has how many corners

in regards to geometry

a 5 foot vertical pole casts a 3 foot shadow a tree casts a 20 foot shadow. find the height of the tree to the nearest tenth

2nd semester  dont know where to start  

.what is the length of three sides of the triangle

the perimeter of a triangle is 43ft. The shortest side is one-third of the length of the middle side. The longest side is 3ft more than four times the shortest side. find the lengths of the three...

A GARDEN IS SHAPED LIKE A RECTANGLE WHOSE PERIMTER IS 84 FT. LENGTH IS 2 FT. MORE THAN WIDTH.

FIND THE LENGTH AND WIDTH?

What is the area of the triangle in cm

7 is on the base of the triangle & 13 is on the right side of the triangle

Find the length of a diagonal of a rectangular box whose edges are 6cm, 8cm, and 10 cm

Find the length of a diagonal of a rectangular box whose edges are 6cm, 8cm, and 10 cm. Write all radicals in simplest form  

line k passes through the two points (-7,-4) and (8,1) what is the equation of a line perpendicular to line m passing through (0,4)

need the equation

find the coordinates of the midpoint of the segment wuth the given pair of endpoints J(6,6) and K(2,-4)

need help finding the endpoints 

Help with rhombus?

if d2 of the rhombus is 14, and one side is 25, what is the area?

Finding volume of a tetrahedron

The edge is 12 and the height is 12 for the tetrahedron. I know that tetrahedron consists of 4 equilateral triangles. I have a problem with finding the volume because i had two answers. first...

How to find the volume of a frustum?

The frustum has: radii of the top circle base is 9. the radii of the bottom circle is 12. The slant height is 6.  I know you draw the frustum into a cone by extending it. Then you do the volume...