GEU6P7 The image shows quadrilateral ABCD.
y1
D
7
6
5
А.
3
С
2
1
В.
2
3
4 5 6
7
a. Prove that quadrilateral ABCD is a square.
b. Find the perimeter of ABCD. Explain or show your reasoning.
c. Find the area of ABCD. Explain or show your reasoning.
Answer all three questions in the box below.

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.