Geometry Quiz

Use a protractor to try to draw each triangle. Which of these three triangles is impossible to draw?

• A triangle where one angle measures 20° and another angle measures 45°

• A triangle where one angle measures 120° and another angle measures 50°

• A triangle where one angle measures 90° and another angle measures 100°

A triangle has an angle measuring 90°, an angle measuring 20°, and a side that is 6 units long. The 6-unit side is in between the 90° and 20° angles.

How many unique triangles can you draw like this?

Find a value for x that makes -x less than 2x.

Find a value for x that makes -x greater than 2x.

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 a 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. For the element aluminum, with a charge from electrons of -10 and a charge from protons of +13, what is the overall charge?

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 a 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. For the element phosphide, with a charge from electrons of -18 and a charge from protons of +15, what is the overall charge?

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 a 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. For the element iodide, with a charge from electrons of -54 and a charge from protons of +53, what is the overall charge?

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 a 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. For the element tin, with a charge from electrons of -50 and a charge from protons of +50, what is the overall charge?

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?