2-min Warm-up — Fill in the geometry words.
A shape's corners are called .
A perfect square corner is a angle.
The distance around a shape is its .
From Week 22: count the sides and vertices (corners) of each shape.
| Shape | Picture | Sides | Vertices |
|---|---|---|---|
| Triangle | |||
| Square | |||
| Rectangle | |||
| Circle |
From Week 24: squares inside = area, units around = perimeter.
Area: squares
Perimeter: units
Area: squares
Perimeter: units
Area: squares
Perimeter: units
Read carefully. Draw if it helps!
I have 4 equal sides, 4 right angles, and 4 lines of symmetry. What shape am I?
My thinking:
Answer:
Mr. Lee splits a pizza into 4 equal shares. Priya splits the SAME size pizza into 2 equal shares. Whose shares are bigger? Why?
My thinking:
Answer:
A rectangle rug is 5 units long and 2 units wide. What is its area? What is its perimeter?
My thinking:
Answer:
Number Talk — Explain WITHOUT calculating.
Can two rectangles have the SAME area but look completely different? Convince me.
My thinking:
A square and a rectangle both have 4 sides and 4 right angles. What makes the square special?
My thinking: