The sum of its angle measures is 360°.
It has four congruent angles.
It has four congruent sides.
Answer:
first one and third one
Step-by-step explanation:
Step-by-step explanation:
3ax - 4x = 15a - 20
x(3a - 4) = 15a - 20
so,
x × 3a = 15a
x × 3 = 15
x = 15/3 = 5
x × -4 = -20
x = -20/-4 = 5
since both terms have the same solution, it is the solution for the whole equation :
x = 5
Answer:
Step-by-step explanation:
area of base = 5×11 = 55 ft²
area of triangle = ½×5×6 = 15 ft²
area of rectangular face = 6.5×11 = 71.5 ft²
surface area = 55 + 2×15 + 2×71.5 = 228 ft²