A pyramid's surface is one base plus several triangle faces. So you need the area of a rectangle/square for the base, the area of a triangle (½ × base × height) for each side, and the skill to add several areas. Warm those up first.
These are words you'll need to already know to follow this lesson — not the new words the lesson teaches. Review each one, its meaning, and the example so the new lesson makes sense from the start.
Level 1 To add the same number many times to find a total.
Example: 6 × 4 means add 6 four times, which equals 24.
Level 1 How much flat space is inside a shape.
Example: A square 4 on each side has an area of 4 × 4 = 16.
Level 1 One of two equal parts of something.
Example: Half of 24 is 12, because 24 ÷ 2 = 12.
Level 1 A flat shape with three straight sides and three corners.
Example: A triangle has 3 sides, like a slice of pizza.
These check the skills you'll need for this lesson — not the new lesson itself. Answer all 3, then press Show my path. No grade — it just suggests where to start.
1. Area of a square that is 4 on each side?
2. Area of a triangle with base 6 and height 4: ½ × 6 × 4?
3. A square pyramid has 1 square base and how many triangle faces?
Vocabulary previewed and basics checked. Time to start the lesson.
Start Lesson 10-5 →