P, Q and R are points on a circle. A tangent to the circle, RT is also shown. What is the size of angle x? Give a reason for your answer. PS: I know the answer is 60, but I don't know how to write the reason for it.

Step-by-step explanation:

x = 60° { the angles formed by a tangent to a circle and a chord drawn from the point of contact are equal to respective angles in alternate segments }

Hope it will help

60

Step-by-step explanation:you add p plus q plus r which is 70+60+50 which equals 180 divided by 3 because p,q,and r and it equals 60. Hope I helped

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.