# GEOMETRY CIRCLES PLEASE

The diagram shows tangent circles and lines. if AB=15 CM find AC, AD and AE .

Help me reiny and other tutors please<3 thank you

this is the figure img19.(imageshack.)us/img19/7143/0eua.png

just remove the open and close parentheses thank you

asked by BARBIE LEE
1. This is just too easy.

Remember that both tangents to the same circle from an exterior point are equal.
so AB = AC
but AC is also tangent to the small circle
so AC = AD
but AD is also a tangent to the circle at the right
so AD = AE

Since the are all equal , and AB = 15
each one of them is 15

posted by Reiny

## Similar Questions

1. ### Geometry - Circles and tangents

Two circles of radius 1 are externally tangent at Q . Let PQ and QR be diameters of the two circles. From P a tangent is drawn to the circle with diameter QR , and from R a parallel tangent is drawn to the circle with diameter PQ
2. ### Geometry/Trigonometry

Circles with centers (2,1) and (8,9) have radii 1 and 9, respectively. The equation of a common external tangent to the circles can be written in the form y=mx+b with m < 0. What is b? I drew the diagram and the tangents but to
3. ### trig

Two circles of radii 5 and 3 cm, respectively, intersect at two points. At either point of intersection, the tangent lines to the circles form a 60◦ angle, as in Figure 2.2.4 above. Find the distance between the centers of
4. ### Math

circles P and Q are externally tangent at T. Horizontal lines l and m are, respectively, tangent to circles P and Q at R and S. Show that RT must contain S.
5. ### math

Draw a diagram to show that there are two tangent lines to the parabola y = x2 that pass through the point (0, −25). Find the coordinates of the points where these tangent lines intersect the parabola.
6. ### math

Six unit circles are arranged inside a rectangle. the circles are tangent to each other and tangent to the rectangle as they appear in the diagram. What is the area of the rectangle?
7. ### Calculus

Draw a diagram to show that there are two tangent lines to the parabola y=x^2 that pass through the point (0,-4). Find the coordinates of the points where these tangent lines intersect the parabola. So far I have taken the
8. ### geometry (high school)

if there are two tangent circles that have two external tangent lines that intersect at a 60 degree angle, what is the ratio of the radii.