supersoccerqueen123
New member
- Joined
- May 18, 2005
- Messages
- 1
i have a really hard geometry question
its on how to prove that theorems are true for external angles. there is a circle and there is a secant and a tangent line connecting at one point outside the circle. the angle that they form is angle e. i have to prove that measurement of angle e is equal to 1/2 times (x-y) which is x is the arc farthest away from the angle e and y is the arc going towards the angle e. i have to prove that that theorem is true using a 2 column proof. can u help me? im stuck on where to start.
so far i have connected the end point of the tangent line on the circle to the other side of the circle which is where the secant is. i knew that those 2 angles are congruent because 2 tangents connecting are equal in 2 angles, i called them angles w. then the angle w on the side of the secant is supplemenatry to the angle necxt to it which i called angle z. please help!
its on how to prove that theorems are true for external angles. there is a circle and there is a secant and a tangent line connecting at one point outside the circle. the angle that they form is angle e. i have to prove that measurement of angle e is equal to 1/2 times (x-y) which is x is the arc farthest away from the angle e and y is the arc going towards the angle e. i have to prove that that theorem is true using a 2 column proof. can u help me? im stuck on where to start.
so far i have connected the end point of the tangent line on the circle to the other side of the circle which is where the secant is. i knew that those 2 angles are congruent because 2 tangents connecting are equal in 2 angles, i called them angles w. then the angle w on the side of the secant is supplemenatry to the angle necxt to it which i called angle z. please help!