3) The area of AABC is 243cm². What is the measure
of one of its angles if two sides of the triangle are 31.1
and 21.6 cm?

PLEASE HELP ME

in geometry, parallel lines are lines in a plane which do not meet; that is, two lines in a plane that do not intersect or touch each other at any point are said to be parallel. by extension, a line and a plane, or two planes, in three-dimensional euclidean space that do not share a point are said to be parallel.

step-by-step explanation:

there's the chart

step-by-step explanation:

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