That is 99 degrees if you have the triangle facing the other way
Answer: I am pretty sure it is 35 min
Step-by-step explanation:
The missing angle would be 35 degrees. The straight line adds up to 180 and the right angle would be 90 degrees. 180-90-55 would be 35.
Answer:
<h2>a = 400/21, b = 580/21</h2>
Step-by-step explanation:
Small triangles are similar. Therefore, the sides are proportional
<em>cross multiply</em>
<em>divide both sides by 21</em>

For b, we can use the Pythagorean theorem:

Answer:
140°
Step-by-step explanation:
The total of interior angles in a polygon is 720 °
The total of the angles given to you is (100*2+130+125*2) = 580
Then you subtract the total of the angles given from the total value of the interior angles to get 140°