LearnFun Comics#18
Triangle Trap
He says it’s a whole rectangle. Base × height can show the truth!
Starring Momo
Perimeter and area · Class 7
Perimeter and area · Class 7
Triangle Trap: Perimeter and area comic
Shapeville. Momo explores the gardens.
Momo: The triangle garden looks neat. I’ll check the edge.
Baron Blunder: Ah, base × height. I’ll bill it as a whole rectangle.
Momo: But a triangle is half of that, right? This looks wrong.
Perimeter and area
Perimeter is the edge. Area is inside.
Square is easy. Perimeter is 4 × side.
Area is side × side.
Momo: I wonder how to find the edge and inside of this garden.
Baron Blunder: See? It’s a 3 by 4 triangle. 6 is the whole rectangle.
Momo: Hmm, the edge is 18. Inside is 12.
Perimeter: 3 + 4 + 5 + 6 = 18
Area: 3 × 4 = 12
Momo’s trick
Measure all sides first.
Multiply to find inside.
Add for the edge.
Momo: Always measure sides. Multiply for inside. Add for the edge.
Your turn, hero!
Baron Blunder♥♥♥
The triangle has a base of 6 cm and a height of 4 cm. What’s its area?
12. Area is half of base × height, so 6 × 4 ÷ 2 = 12.
Baron Blunder: You can’t figure it out? It’s simple! Just add a few coins to make it a square.
A 5 cm by 5 cm square garden. What’s its perimeter?
20. Perimeter is 4 × side, so 5 × 4 = 20.
The final battle
Baron Blunder♥♥♥
Momo makes a triangle with a base of 8 cm and a height of 6 cm. What is the area in square cm?
24. Area is half of base × height, so 8 × 6 ÷ 2 = 24.
Baron Blunder: You’re falling for my tricks! I’m the master of shapes!
Momo: I swapped every label! Now the garden’s really a triangle.
The town was saved. Baron Blunder’s plan was flat.
The End?
Villain card won! Answer again in a few days and it turns gold.
Remember
- Perimeter is the edge.
- Area is inside.
- Add for the edge. Multiply for the inside.
But why does the garden look like a circle today? More to solve!
A comic book about Perimeter and area. Follow Momo, learn the idea, and answer three questions to beat Baron Blunder.