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Intermediate November 2021 Unit 1 Q1

WJECIntermediateCurrent spec5 marksAngles (Including Parallel Lines)Angles in Polygons

1.

(a) Calculate the size of angle \(x\) in the right-angled triangle shown below. [2]
Right-angled triangle with the right angle at the bottom left, angle 37° at the bottom right and angle x at the top

Diagram not drawn to scale

(b) \(ABCD\) is a quadrilateral.
\(BE\) is a straight line.
Calculate the size of angles \(a\) and \(b\). [3]
Quadrilateral ABCD with angle 82° at C, 153° at D, angle b at B and angle a at A; the line BA is extended to E and the angle DAE is 129°

Diagram not drawn to scale

\(a\) = ………………… °    \(b\) = ………………… °

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