There are 5 Germans and 5 Italians in an English class. If a group of 3 is going to be created, what is the probability that eve
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Answer:
Using properties of parallelogram and angle sum property of a triangle in the figure as shown below in the attachment
In parallelogram ABCD, AC is a diagonal.
Given: and
As, we know that opposite angles in parallelogram are equal.
therefore,
Now, in ΔADC
Sum of the measures of angles in a triangle is 180 degree.
Substituting the values of and
we have;
or
Subtract from both sides we get
Therefore, the measure of angle CAD is .
