angle x= 77° because base angles on an isosceles triangle are the same.
hope that helped^^
Answer:
24x
6x + x - 2
Step-by-step explanation:
You combining the 4 sides of the square
6x + 6x + 6x + 6x
Same with the triangle
Answer:
Step-by-step explanation:
There is no diagram attached
It is assumed the angles are vertical
<u>Vertical angles are congruent as per vertical angles theorem</u>
- 3x + 21 = 6x - 60
- 6x - 3x = 21 + 60
- 3x = 81
- x = 81/3
- x = 27
<u>Angle measures</u>
<u>So the answer is</u>
Answer:
5400 mi²
Step-by-step explanation:
The area is half the absolute value of the sum of the determinants of the points taken pairwise in some consistent order around the polygon. For a triangle, this sum of determinants can also be written as the determinant of a 3×3 matrix of the coordinates with the third column being 1.
... Area = (1/2)|D|
where D = ...
Then the area is (in grid squares) ...
... Area = (1/2)|27| = 13.5 . . . . grid squares
Each grid square is (20 mi)² = 400 mi², so 13.5 grid squares is ...
... 13.5 × 400 mi² = 5400 mi²