**How you can check an angle across the diagonal of the room or the partial diagonal.**

**Step 1: **Choose **Check angle.**

**Step 2:** Select the angle to be checked in the ground plan.

**Step 3:** Measure the appropriate diagonal between the walls where the angle lies. You can also measure the partial diagonal if the diagonal cannot be measured.

**Step 4:** Enter the maximum value of the diagonal manually in the Diagonal field and the new angle value will be calculated automatically.

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**Step 5:** Click **OK** to finish the command