lesson 1-6 two-dimensional figures concept checks

Lesson 1-6

Two-Dimensional Figures

Concept Checks

Concept CheckConcept CheckConcept CheckConcept Check

Click the mouse button or press the Click the mouse button or press the Space Bar to display the answers.Space Bar to display the answers.

Check 1-A


A. triangle, concave, regular

B. triangle, convex, irregular

C. quadrilateral, convex, regular

D. triangle, convex, regular

Name the polygon by the number of sides. Then classify it as convex or concave and regular or irregular.



Concept CheckConcept CheckConcept CheckConcept CheckCheck 1-B

A. quadrilateral, convex, irregular

B. pentagon, convex, irregular

C. quadrilateral, convex, regular

D. quadrilateral, concave, irregular

Name the polygon by the number of sides. Then classify it as convex or concave and regular or irregular.



Check 2-A

A. P = 12.4 cm, A = 24.8 cm2

B. P = 24.8 cm, A = 34.83 cm2

C. P = 34.83 cm, A = 69.66 cm2

D. P = 24.4 cm, A = 32.3 cm2

A. Find the perimeter and area of the figure.



Check 2-B

A. C ≈ 25.1 m, A ≈ 50.3 m2

B. C ≈ 25.1 m, A ≈ 201.1 m2

C. C ≈ 50.3 m, A ≈ 201.1 m2

D. C ≈ 201.1 m, A ≈ 402.1 m2

B. Find the circumference and area of the figure.



Check 3

A. a rectangle with a length of 26 inches and a width of 18 inches

B. a square with side length of 22 inches

C. a right triangle with each leg length of 26 inches

D. a circle with radius of 14 inches

Each of the following shapes has a perimeter of about 88 inches. Which one has the greatest area?



Check 4

A. 17.9

B. 22

C. 13.3

D. 9.1

Find the perimeter of quadrilateral WXYZ with W(2, 4), X(–3, 3), Y(–1, 0), and Z(3, –1).

lesson 1-6 two-dimensional figures concept checks

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