Answer:
its all sides are equal and diagonal make 90° angle.
so, the answer option c.
Answer:

Step-by-step explanation:








45 yd. Area Is BH. the area of the base is 9. Times the height, 5, is 45
Answer:
40%
Step-by-step explanation:
10% of 40 is 4
4x4=16 meaning that 10% x 4 = 40%