Answer:
90 degrees
Step-by-step explanation:
since angle A's exterior angle is 90 on a straight line then angle a is 90. 180-90=90 for the rest
Since the scale factor is 3:1 you can multiply the length of the side of the triangle to the right by 3 to make the ratio 3:3
the equation would be:
2x+5 = 45
subtract 5 from both sides
2x = 40
divide both sides by 2
x = 20
hope this helps
I believe its the third one, because you just plug in the values to the vertex form
This is the area of a trapezoid and the formula for that is:
.5(h)(b1 + b2) where h is height and b1 and b2 are the base length or the length of the parallel sides. therefore, our area is:
.5(16)(6+12)
8(18)
144
if you're wondering why the area formula works, construct another trapezoid but this time upside-down. now flip it along it's height axis so you can align one of the side lengths of the 2 trapezoids and you have a parallelogram.
the base of this parallelogram is b1+b2 of the original trapezoid and the height still remains h so the area of this parallelogram is (h)(b1 + b2). however, we want to find the area of the trapezoid but we find that the parallelogram is twice the area of our trapezoid so the area of the trapezoid is half the area of the parallelogram. so area = .5(h)(b1 + b2).
let me know if you have any questions!
Answer:
<h3>12 units squared</h3><h3>
Height= 3 units squared</h3><h3>
Base= 4 units squared</h3>
Explanation:
<h3>If you are trying to find the surface area of a figure you want to do base times height.</h3><h3 /><h3>4 squared x 3 squared = 12 squared</h3><h3 /><h3>12 units squared</h3>