Unit 8, Section A

Side Lengths, Angles, and Lines of Symmetry

Grade 4

Practice

Problem 1
3.G.A.1
Pre-unit
Student Task Statement
Here are 6 shapes:
6 shapes. A. 3 equal sides and angles. B. 3 sides of different length, one right angle. C. 4 sides, opposite sides parallel and equal length, 4 right angles. D. 4 equal sides, opposite sides parallel, opposite angles equal size. E. 4 equal sides. all right angles. F. 4 sides, opposite sides parallel and equal length, , opposite angles equal size, 2 acute angles, 2 obtuse angles.

Which shapes are quadrilaterals?

Which shapes are rhombuses?

Which shapes are rectangles?
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Problem 2
3.MD.C.7 3.MD.D.8
Pre-unit
Student Task Statement

Find the perimeter and area of the rectangle. Explain or show your reasoning.

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Problem 3
3.G.A.2
Pre-unit
Student Task Statement
Select all images that show half of the rectangle shaded.
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Problem 4
ForLesson 1: Ways to Look at Figures
Student Task Statement
Here are 4 shapes:

4 shapes. All have 4 sides. A. 1 pair of parallel sides. B. 2 pair of opposite parallel sides with equal length. C. 2 pair of opposite parallel sides. all 4 sides are equal length. D. 2 pairs of opposite parallel sides with equal length. 4 right angles.

Name some attributes that all the shapes share.

Name some attributes that the shapes do not share.
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Problem 5
ForLesson 2: Ways to Look at Triangles
Student Task Statement
Here are 4 triangles:

Which triangles are right triangles?

Which triangles have an obtuse angle?

Which triangles have 3 acute angles?
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Problem 6
ForLesson 3: Ways to Look at Quadrilaterals
Student Task Statement
Here are 3 rhombuses:

What attributes do the 3 rhombuses share?

What attributes are different in the 3 rhombuses?
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Problem 7
ForLesson 4: Symmetry in Figures (Part 1)
Student Task Statement
Draw any lines of symmetry for these letters:

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Problem 8
ForLesson 5: Symmetry in Figures (Part 2)
Student Task Statement
Complete each figure so that the dashed line is a line of symmetry for the completed figure.

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Problem 9
Exploration
Student Task Statement

Draw all the lines of symmetry you can find in this snowflake. How many can you find?

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Problem 10
Student Task Statement
Draw each shape and all the lines of symmetry you can find in it.

Rectangle

Rhombus

Square
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