I can find the area of a composite figure by decomposing it into basic shapes, including a regular polygon split into triangles, and adding or subtracting the areas.Puedo hallar el área de una figura compuesta descomponiéndola en figuras básicas, incluido un polígono regular dividido en triángulos, y sumando o restando las áreas.
MissionMisión · Pixel ArcadeArcade de píxeles
Clear every level.Supera todos los niveles.
Pixel Arcade is expanding! Floors, game boards and prize walls are made of rectangles, triangles and cutouts. Break each figure into simple shapes, then add or subtract to clear every level.
¡Pixel Arcade se está ampliando! Los pisos, los tableros de juego y las paredes de premios están hechos de rectángulos, triángulos y recortes. Divide cada figura en figuras simples y luego suma o resta para superar todos los niveles.
Word bankBanco de palabras 4 words4 palabrascomposite figure, decompose, congruent, …figura compuesta, descomponer, congruente, …
- composite figurefigura compuesta
- A shape made by putting two or more simple shapes together.Una figura formada al juntar dos o más figuras simples.
- decomposedescomponer
- To break a shape into smaller, simpler shapes.Separar una figura en figuras más pequeñas y simples.
- congruentcongruente
- Exactly the same size and shape.Exactamente del mismo tamaño y forma.
- regular polygonpolígono regular
- A shape whose sides are all the same length and whose angles are all the same size.Una figura cuyos lados tienen la misma longitud y cuyos ángulos tienen la misma medida.
Stage 1 of 5Etapa 1 de 5
Get ReadyPrepárate
Wake up what you know, then explore today's model.
Activa lo que sabes y luego explora el modelo de hoy.
- A trapezoid floor has a shorter base of 6, a longer base of 11 and a height of 4. Predict its area by splitting it into a rectangle and a triangle. Then set the model's first parallel base to 11. Did your prediction match the trapezoid area? Explain what each piece was.
- In the formula A = ½(b₁ + b₂) × h, what do b₁ and b₂ stand for?
- The two slanted sides
- The base and the height
- The perimeter and the height
- The two parallel sides
- What is the area of a trapezoid with bases 6 cm and 10 cm and height 4 cm?
- 20 square cm
- 32 square cm
- 64 square cm
- 240 square cm
- What is the area of a trapezoid with bases 5 cm and 9 cm and height 6 cm?
- 20 square cm
- 42 square cm
- 84 square cm
- 270 square cm
- 1 fresh problem with new numbers each time (interactive only).
Stage 2 of 5Etapa 2 de 5
Try ItInténtalo
Use the hints when you need them. Every wrong answer tells you why.
Usa las pistas cuando las necesites. Cada respuesta incorrecta te dice por qué.
- An L-shaped room is made of two rectangles: 10 ft × 6 ft and 4 ft × 3 ft. What is the total area?
- 12 sq ft
- 60 sq ft
- 72 sq ft
- 72 ft
- A rectangular patio is 15 ft × 10 ft with a 5 ft × 4 ft rectangular flower bed cut out. What is the remaining area?
- 20 sq ft
- 130 sq ft
- 150 sq ft
- 170 sq ft
- Find the area of an L-shape made of a 5×3 rectangle and a 2×4 rectangle.
- 8 sq units
- 15 sq units
- 20 sq units
- 23 sq units
Stage 3 of 5Etapa 3 de 5
On Your OwnPor tu cuenta
Tables, mistakes to find, and problems with a few steps.
Tablas, errores por encontrar y problemas de varios pasos.
- Fill in the table
- Match each composite figure to its total area.
- Spot the Common Mistake
- What is the best next move?
- Add up the lengths of all the sides.
- Find the area of each rectangle.
- Subtract the small rectangle from the big one: 9 × 4 − 3 × 5.
- Find the area of the 9 by 4 rectangle only.
Stage 4 of 5Etapa 4 de 5 · OptionalOpcional
Practice MorePractica más
Optional extra practice. Press New numbers for another problem on the same skill.
Práctica extra opcional. Toca Números nuevos para otro problema de la misma habilidad.
- 5 fresh problems with new numbers each time (interactive only).
Stage 5 of 5Etapa 5 de 5
Show What You KnowDemuestra lo que sabes
Show what you learned today. Take your time; you can try again.
Muestra lo que aprendiste hoy. Tómate tu tiempo; puedes intentarlo otra vez.
- What is the area of the top of the T?
- 18 sq ft
- 36 sq ft
- 56 sq ft
- 60 sq ft
- What is the total area of the T-shaped room?
- 96 sq ft
- 104 sq ft
- 116 sq ft
- 840 sq ft
- What will the carpet cost?
- $116
- $300
- $580
- $1,160