book Maths Puzzle Numerical Ability

it is possible for two lines to intersect in such a way that three of the angles formed have measures of 20, 70, 20. true or false

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book Other Question

Wut does ( ) that mean in an order of an operation problem? seven times a number is the same as 12 more than 3 times the number. Find the number. we have to write an equation plus solve it.