https://file.aiquickdraw.com/mathbot/file/1727942638604kj68drzf.jpg

This is an image of a quadrilateral where three of its angles are given: 73°, 100°, and 90° (a right angle). The unknown angle is labeled as \( x^\circ \).

To find the size of the pronumeral \( x \), we can use the fact that the sum of the interior angles of any quadrilateral is 360°.

So, we can set up the following equation:
\[
73^\circ + 100^\circ + 90^\circ + x^\circ = 360^\circ
\]
Now, let's solve for \( x \):
\[
x^\circ = 360^\circ - (73^\circ + 100^\circ + 90^\circ)
\]
\[
x^\circ = 360^\circ - 263^\circ = 97^\circ
\]

Thus, the size of the pronumeral \( x \) is **97°**.

Would you like further details or have any questions?

Here are 5 related questions you can explore:
1. How do you calculate the sum of interior angles for polygons with more than 4 sides?
2. Can the angles of a quadrilateral ever be greater than 360°?
3. How do you classify different types of quadrilaterals based on their angles?
4. What would happen if one of the angles were missing instead of given?
5. Can you apply this method to irregular polygons?

**Tip:** Always double-check if the shape is drawn to scale, especially when relying on visual data for geometric problems!

What is the size of the pronumeral in a quadrilateral with three angles given as 73°, 100°, and 90°, and the missing angle is labeled x°?

Learn how to find the missing angle in a quadrilateral with three angles given as 73°, 100°, and 90°. Using the Quadrilateral Angle Sum Theorem, we solve for the missing angle in a step-by-step approach, perfect for students in Grades 6-8.

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