Question

in figure 6.24, find
(1) angle ACB
(2) angle ACD
(3) angle AEB​

Answer 1

angle CAD + angle ACD + angle ADC = 180 ° ( SUM OF 3 ANGLE IS EQUAL TO 180°)

65° + angle ACD + 55° = 180°

angle ACD = 180° - ( 55°+65° )

angle ACD = 180° - 120°

angle ACD = 60°

angle ACB + angle ACD = 180° ( LINEAR PAIR )

angle ACB = 180° - 60°

angle ACB = 120°