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how do i simplify this?

(01.02 lc) angle abc has point e on ray ba and point d on ray bc. points e and d are equidistant from point b. to bisect angle abc, which of the following needs to be identified for the construction? the distance between points e and d the point in the angle that is equidistant from points e and d the endpoint of rays ba and bc the point outside of the angle that is equidistant from points e and d

Show your workcan a right triangle have this sides? *how to prove it without using the pythagorean theorema*

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle