exam Maths Puzzle Numerical Ability

(Use 4 steps)
Given: a and c are vertical angles formed by lines n and m.

Prove: a = c

Pls. use the two column proof...
The statement and the reason for this proof...

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exam Other Question

a photo is 8 inches long and 5 inches wide. If reduced copy is made so that the width is 3 inches, what will be the length of the copy? The second of three numbers is 1 less than the first. The third number is 5 less than the second. If the first number is twice as large as the third, Find the three numbers.