Question

In the diagram below, m/CAD = 47°, m/CAB = 77° and

m/ADB = 105°. Find m/B.
Step
1
2
3
try
Angle
m/CAD = 47°
m/CAB = 77°
(hover here to see on figure)
m/ADB = 105°
m/
B
O
Select a Reason
105°
Reason
Given
Given
Given
C
47°
A
(

Answer 1

4) m∠BAD=30° (angle subtraction postulate)

5) m∠B=45° (sum of angles in a triangle)