mathscircles
posted by anoynomous .
a circle with centre O, secants AB and EF intersect each other at point C in the exterior of the circle .
prove that
measure of angle ACE=(1/2)*{measure of arcAE)measure of arc BF}
Respond to this Question
Similar Questions

math
Whats the difference between an arc [of a circle]'s length and measure? 
Geometry
The question is to find the measure of arc PQ in Circle A. The point A is the center of the circle, and the chords PR and SQ intersect at the center. Arc PQ is (3y10), while arc SR is (2y+20). I know there's a theorem that states … 
Math
The measure of an angle formed by two secants intersecting inside the circle equals a.½ the sum of the intercepted arcs b.½ the difference of the intercepted arcs c.½ the measure of the intercepted arc I need help please! 
Math
1.Radii of congruent circles are equal. True or False 2.The measure of an angle formed by two secants intersecting outside the circle equals a. ½ the sum of the intercepted arcs b. ½ the difference of the intercepted arcs c. ½ the … 
geometry
Point C is the center of the circle. The measure of angle ACB is 15x + 20. Arc AB measures 20x – 10. Find the measure of arc AB. 
maths
an arc of a circle subtends a central angle of 5pi/6 radians.if the radius of the circle measures 10.6cm, determine the approx measure of the arc leanth 
geometry
Two chords that intersect within a circle form an angle whose measure is 55°. If this angle’s arc is 100°, what is the measure of the arc of its vertical angle? 
Geometry
Triangle RSU has two of its points(R and S) on the sides of a circle. Line SU forms a secant ray that passes through the diameter of the circle. Angle S is 30 degrees, the measure of arc RS is 84 degrees, and RU is tangent to the circle … 
math advanced functions
a) Determine the measure of the central angle that is formed by an arc length of 5 cm in a circle with a radius of 2.5cm. Express the measure in both radians and degrees, correct to one decimal place. b) Determine the arc length of … 
geometry
The measure of an angle formed by two secants intersecting outside the circle equals ½ the sum of the intercepted arcs ½ the difference of the intercepted arcs ½ the measure of the intercepted arc