Concept explainers
To calculate : The probability that two congruent

Answer to Problem 19PSD
The desired probability is
Explanation of Solution
Given information : The following information can be interpreted from the given question
There are four angles in total
There are two pairs of congruent angles (vertically opposite angles)
Formula used : The following formula is used to determine the probability
Calculation : First, we find the number of favorable outcomes
Number of favorable outcomes
Total number of outcomes
Now, we use the formula and put in the values
Thus, the final probability is
Chapter 2 Solutions
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