Work out the area of this semicircle take pie to be 3.142 and write down all the digits given by your calculator 18cm

In the proof of the triangle angle sum theorem, you must draw an auxiliary line. which construction must you use to draw this line?

Alex drew a circle with right triangle prq inscribed in it, as shown below: the figure shows a circle with points p, q, and r on it forming an inscribed triangle. side pq is a chord through the center and angle r is a right angle. arc qr measures 80 degrees.

Aline passes through 3,7 and 6,9 what equation represents the line