Question

Practice set 3.1
In figure 3.8, ZACD is an exterior angle of A ABC.
ZB = 40°, ZA= 70°. Find the measure of ZACD.
A
In A PQR, ZP= 70°, ZQ = 65° then find ZR.
B
С
D
Fig. 3.8​

Answer 1

Step-by-step explanation:

Angle ACD = Angle A + Angle B

= 70+40

= 110°

angle P + angle Q + angle R = 180° (Angle sum

property)

70 + 65 + R = 180

135+R=180

R = 180-135

R = 45°