Exercises Part 2
Calculator
by justifying the measurement of angles: CAD and CDA

Part 2
1) give the value of BD
2) show that AD = 150
3) show that AC = 50
3) calculate the exact value of CD
Part 3
Check that x is the difference between the perimeters of triangles ABC and ABD
Part 4
1) Give the exact value of the area of ​​ABD then that of ACD
2) Complete with the exact value then approximate: area of ​​ABD = X area of ​​ACD​