Exercises<br />Part 2<br />Calculator<br />by justifying the measurement of angles: CAD and CDA<br /><br /><br />Part 2<br />1) give the value of BD<br />2) show that AD = 150<br />3) show that AC = 50<br />3) calculate the exact value of CD<br />Part 3<br />Check that x is the difference between the perimeters of triangles ABC and ABD<br />Part 4<br />1) Give the exact value of the area of ​​ABD then that of ACD<br />2) Complete with the exact value then approximate: area of ​​ABD = X area of ​​ACD​