Answer:
0
Step-by-step explanation:
You can't construct any triangles with those angles. Because when you add all the angles of a triangle, it has to add up to 180. But when we add 50,70, and 100, it equals 220. So you can't construct any triangles.
Hope this helps.<em> (If it does, please mark me brainliest)</em>
The answer is 9.
Hope I helped
20%
100%(total points possibly given)
- 80% (points received)
equals 20%
In the Triangle ABD, Using Pythagoras theorem we can write

In the Triangle ACD using Pythagoras Theorem

Now in the larger Triangle ABC, we can write

Now substitute the values from the above equations we get
