exam Maths Puzzle Numerical Ability

The measure of the vertex angle of an isosceles triangle is 3 times as large as the measure of each base angle. find the measure of each angle of the triangle

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exam Other Question

Write the equation of the line with x-intercept (-, 0) and undefined slope

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P is the midpoint of QR and line ST, and line QR is congruent to line ST.
Write a paragraph proof to show that PQ=PT.