An obtuse angle is between \(90^\circ\) and \(180^\circ\). To estimate the size of an angle, try thinking in terms of counting in quarter turns, or right angles. For example, the angle in the ...
STEP 1: Use the ruler to draw a straight horizontal line, draw a diagonal line from the end of the horizontal line... Image caption, ...and draw another diagonal line to join the points and mark the ...
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