Question

12
If m ABC = 122°, and mZABD = 71°,
then mZDBC = [ ? 1°
Enter

Answer 1

DBC= 40˚

Explanation:

Since we already know what ABC and ABD is we could use these information to get what DBC is.

Since ABD and DBC adds together to sum up to ABC we could use this info to create this equation:

ABD+DBC=ABC

Replace ABD and ABC with the number that it is equal to

71˚+DBC=112˚

Move 71˚ to the other side by subtracting

DBC=112˚-72˚

Which is 40˚

So the answer is 40˚

Hope this helped!

Answer 2

`122 - 71 = 51 \\ m < 51`