See the picture in the attached figure
we know that
There are six important properties of parallelograms to know:
<span>1) Opposite sides are congruent (AB = DC).
2) Opposite angels are congruent (D = B).
3) Consecutive angles are supplementary (A + D = 180°).
4) If one angle is right, then all angles are right.
5) The diagonals of a parallelogram bisect each other.<span>6) Each diagonal of a parallelogram separates it into two congruent triangles.
so
if t</span></span>he diagonals of a parallelogram bisect each other
then
AE=EC
AC=AE+EC------> AC=2*AE----> AE=AC/2----> AE=18/2----> AE=9 units
the answer isAE=9 units
Step-by-step explanation:
is given
definition of <u>bisect</u>
<u /> are both given
<u /> definition of perpendicular
because all right angles are congruent
vertical angles are congruent
ASA (angle-side-angle)
CPCTC (corresponding parts of congruent triangles are congruent)
Answer:
The light blue one
Step-by-step explanation:
Answer: 1 is a quadrilateral. I’m very sorry I don’t know the second shape.
Step-by-step explanation: a quadrilateral has 4 sides and two triangles.
Alison has 18 dimes and 7 nickels