Answer:
Part 1) Greta's right, the triangle is incorrect.
Part 2) 
Part 3) The height of the tree is
, Trey’s house is not at risk
Step-by-step explanation:
Part 1) we know that
In the right triangle of the figure


Compare

therefore
The triangle is not correct
Because
The side adjacent to the 30 degree angle should be
and the side opposite the 30 degree angle should be 
Part 2)
Let
x--------> the distance from the airplane to the SCCA (hypotenuse of the right triangle)
we know that



Part 3)
Let
x--------> the height of the tree
we know that



therefore
Trey’s house is not at risk
Answer:
<em>First </em><em>we </em><em>will </em><em>find</em><em> </em><em>the</em><em> </em><em>surface</em><em> </em><em>area</em><em> of</em><em> </em><em>the</em><em> </em><em>right</em><em> </em><em>triangle</em><em>.</em><em> </em><em> </em><em> </em><em> </em>
<u>area </u><u>of</u><u> the</u><u> </u><u>right</u><u> </u><u>triangle=</u><u>1</u><u>/</u><u>2</u><u>*</u><u>base*</u><u>height</u><u>.</u>
<em>now</em><em> </em><em>multiply</em><em> </em><em>it </em><em>by</em><em> </em><em>2</em><em> </em><em>then </em><em>we </em><em>will</em><em> </em><em>get </em><em>the</em><em> </em><em>S.A </em><em>of </em><em>both</em><em> the</em><em> </em><em>right</em><em> </em><em>triangles</em><em>.</em>
Now, the other seems to be a rectangle,so find its area. And also the unseen side is a rectangle so find its area also .
<u> </u><u>And</u><u>. </u><u> </u><u> </u><u>now</u><u> </u><u>at </u><u>the</u><u> </u><u>last</u><u>. </u><u> </u><u> </u><u> </u><u>plus</u><u>. </u><u> </u><u> </u><u>the</u><u> </u><u> </u><u>area</u><u> of</u><u> </u><u>all </u><u>the</u><u> </u><u>sides</u><u>. </u><u> </u><u> </u><u> </u><u>you</u><u> </u><u>will</u><u> get</u><u> </u><u>your</u><u> answer</u><u>.</u><u> </u><u>understand </u><u>buddy</u><u>.</u><u /><u />
Answer:
A, B, & D are polygons of equal straight lined sides. F is an irregular polygon which has unequal straight lined sides. C & E are NOT polygons as they have curves which cancels their polygon status.
Answer:
If a = b and b = c, then a = c
Step-by-step explanation:
The transitive property of equality tells us that if we have two things that are equal to each other and the second thing is equal to a third thing, then the first thing is also equal to the third thing.