Unit 8, Section B
Reason about Attributes to Solve Problems
Grade 4
Practice
Problem 1
-
What is the perimeter of this rhombus? Explain or show your reasoning.
-
Diego says he can find the area of this rectangle because he knows 2 side lengths.
Do you agree with Diego? Explain your reasoning.
to access Practice Problem Solutions.
Problem 2
The spinning part of a windmill is called a rotor. This figure represents a rotor with 5 blades.
-
Draw the lines of symmetry for the figure.
- Each blade is 5 feet long and \(1 \frac{1}{2}\) feet wide. What is the perimeter of the rotor, as shown in the diagram? Explain or show your reasoning.
Problem 3
Here is Rectangle R.
-
What shape can be folded once along a line of symmetry to create R? What are the side lengths of that unfolded shape?
- What shape can be folded twice along lines of symmetry to create R? What are the side lengths of that unfolded shape?
to access Practice Problem Solutions.
Problem 4
Exploration
How many lines of symmetry are there in this design? Explain or show your reasoning.
to access Practice Problem Solutions.