Geometry and Price Calculations

The video tutorial covers slicing solids, focusing on identifying cross sections of a cube and other three-dimensional figures. It explains how to achieve different cross sections by slicing parallel or perpendicular to a face. The tutorial also includes a section on supplementary angles, demonstrating how to complete a table with angle measures. Finally, it addresses problems involving price changes, using percentage calculations to determine the new price of a cell phone after increases and decreases.

What shape is formed when a cube is sliced through points A, B, and C?

• Hexagon

• Rectangle

• Triangle

• Circle

If you slice a three-dimensional figure parallel to a face, what shape might the cross-section be?

• Oval

• Pentagon

• Rectangle

• Circle

What shape is the cross-section when slicing perpendicular to a face?

• Trapezoid

• Square

• Circle

• Triangle

What is the sum of two supplementary angles?

• 90 degrees

• 180 degrees

• 270 degrees

• 360 degrees

If one angle measures 80 degrees, what is the measure of its supplementary angle?

• 100 degrees

• 80 degrees

• 60 degrees

• 90 degrees

How do you find the measure of a supplementary angle if one angle is X degrees?

• Add X to 90

• Subtract X from 180

• Divide X by 2

• Multiply X by 2

What expression represents the price of a phone after a 10% increase from C?

• 1.1C

• 0.9C

• C - 0.1

• C + 0.1

What expression represents the price of a phone after a 10% decrease from 1.1C?

• 1.1C - 0.11C

• 1.1C + 0.11C

• C - 0.1C

• C + 0.1C

Is the price of the phone this month the same as it was two months ago?

• No, it is cheaper

• No, it is more expensive

• Yes, it is the same

• Yes, it is more expensive

What is the final price of the phone after a 10% increase and a 10% decrease?

• 1.1C

• 1.2C

• C

• 0.99C