Question

find the value of x.

Answer 1

first of all ignore the circle

Answer 2

then put an imaginary line where the 2 triangles meet

Answer 3

you will see that one of the triangles is just a reflection

Answer 4

because they are a reflection x=40 degrees

Answer 5

@jacobrocket173buuuttt.....we've to use the circle to solve that....any proof?

Answer 6

but still picture a line that cuts everything in half

Answer 7

then fold where you made the line and angle x should equal the angle with 40 degrees

Answer 8

an inscribed angle equals 1/2 of the intercepted arc.
notice that both "inscribed angles" have the *same intercepted arc*
same arc means same inscribed angle.

Answer 9

im just soo use to the triangles by its self okay so sry if the info i gave is wrong

Answer 10

so wait am i half right or completely wrong

Answer 11

@jacobrocket173 you are correct that x is 40 degrees, but you should not assume the triangles *appear* to be reflections of each other... they are, but to prove it, you should use a geometric theorem (such as the one about inscribed angles)

Answer 12

remember im being taught differently okay

Answer 13

i can prove it use a diff theorem tho if i had another angle

Answer 14

@jacobrocket173 thanks for the answer anyway.....atleast you tried!