- The opposite sides are parallel and congruent. - The diagonals bisect each other.
- There are 4 right angles. - The diagonals are congruent.
- Show that both pairs of opposite sides are congruent.
Answer:
definition of constant
Step-by-step explanation:
the definition of constant is occurring countinuosly over a period of time
Answer:
D. 21
Step-by-step explanation:
replace 21 for r, 4(21)=84
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Answer:
(8c-11)/5= x
Step-by-step explanation:
5(2c-?)=2c+11
10c-5x=2c+11
10c-2c=11+5x
(8c-11)/5= x
2x+38=180
2x=142 (or x+x=142 from which 2x=142)
x=71
The unknown angles are each 71
You know this answer is logical as, since two sides are 21 it hints that we are looking at an equilateral triangle, which means two of its angles will be the same