Answer:
In triangle SHD and triangle STD.
[Side]
Since, a line is said to be perpendicular to another line if the two lines intersect at a right angle.
⇒
[leg] [Given]
Reflexive property states that the value is equal to itself.
[Leg] [Reflexive property]
HL(Hypotenuse-leg) theorem states that any two right triangles that have a congruent hypotenuse and a corresponding congruent leg are the congruent triangles.
then, by HL theorem;
Proved!
Answer:
Angles C and D are what I think are called Supplementary angles. Therefore they equal 180 degrees.
Step-by-step explanation:
If you subtract the measure of angle D by 180 degrees then you should get the measure of angle C which is 56 degrees. I don't really know what they are asking for in the first question. You didn't put any of the choices. :)) Think this may be right.