IM 7.7.9 Practice: Drawing Triangles (Part 1)

Use a protractor to try to draw a triangle where one angle measures 20° and another angle measures 45°.

Use a protractor to try to draw a triangle where one angle measures 120° and another angle measures 50°.

Use a protractor to try to draw a triangle where one angle measures 90° and another angle measures 100°.

Which of the above three triangles is impossible to draw?

[size=150]A triangle has an angle measuring [math]90^\circ[/math], an angle measuring [math]20^\circ[/math], and a side that is 6 units long. The 6-unit side is in between the [math]90^\circ[/math] and [math]20^\circ[/math] angles.[br][br][/size]Sketch this triangle and label your sketch with the given measures.

How many unique triangles can you draw like this?

Find a value for [math]x[/math] that makes [math]-x[/math] less than [math]2x[/math].

Find a value for [math]x[/math] that makes [math]-x[/math] greater than [math]2x[/math].

One of the particles in atoms is called an electron. It has a charge of -1. Another particle in atoms is a proton. It has charge of +1.

The overall charge of an atom is the sum of the charges of the electrons and the protons. Here is a list of common elements:

Find the overall charge for the rest of the atoms on the list.

A factory produces 3 bottles of sparkling water for every 7 bottles of plain water. If those are the only two products they produce, what percentage of their production is sparkling water? What percentage is plain?