Using Two Speed Squares to Find Obtuse Angles

What happens here

The presenter begins by introducing the topic of finding obtuse angles using speed squares. He demonstrates the first method by positioning a blue Empire speed square flush against one side of the obtuse angle on a wooden workpiece to establish a 90-degree reference. He then places a red Milwaukee speed square against the other side of the obtuse angle, ensuring both squares meet precisely at the corner of the workpiece. The reading on the Milwaukee speed square (the acute angle) is identified as 50 degrees. To calculate the full obtuse angle, 90 degrees (from the first square) is added to 50 degrees, resulting in 140 degrees. The presenter then uses a yellow angle finder tool to verify this 140-degree measurement, aligning it with the angle of the workpiece and confirming the reading.

Goal: Measure an obtuse angle by combining a 90-degree reference with a measured acute angle.