Skip to main content
Stesso

Using One Speed Square to Find Obtuse Angles

0:50
1:41
29.9K views

At 0:50 in

Find an obtuse angle with a speed square #diy #tools #woodworking #home #handyman

Watch on YouTube

What happens here

This step details how to find an obtuse angle using only one speed square. The presenter places the red Milwaukee speed square at the corner of the obtuse angle on the wooden workpiece. He then uses a yellow pencil to draw a line along the edge of the speed square that aligns with one side of the angle. Next, he pivots the speed square on its pivot point, aligning another edge with the second side of the obtuse angle. He reads the acute angle indicated by the speed square, which is 40 degrees. To calculate the obtuse angle, he subtracts this measured acute angle (40 degrees) from 180 degrees (the total degrees in a straight line), which results in 140 degrees. This demonstrates that even with one speed square, an obtuse angle can be precisely determined through a simple calculation.

Goal: Determine an obtuse angle using a single speed square and a calculation from 180 degrees.

Tools and materials

  • Milwaukee Speed Square Milwaukee — Measuring the acute angle of the workpiece
  • Pencil — Marking the angle on the workpiece
  • Wooden workpiece — The surface on which the obtuse angle is being measured

What they say

Hide

140° angle right here. All right. So, let's say you only have one speed square, and you got to put new molding in or flooring in or whatever the case may be, and you got two walls that kind of go like this. So, you're going to go ahead, and you're going to put this first speed square up in the corner here, and you're going to strike a line, just like that, right? And now you're going to go, and you're going to pivot on this. And that line is going right to the 40, right? So, you're going to subtract 40 from 180. 180 - 40 is 140, and that's how you know that this angle is 140. And that's

Auto-generated from the video audio.