MA.912.G.2.5: Explain the derivation and apply formulas for perimeter and area of polygons (triangles, quadrilaterals, pentagons, etc.).

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Geometry Mini-Lesson
MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
The perimeter of square ABCD is 40 cm.What is
the length of apothem EF?

• 2.5 cm
• 5 cm
• 10 cm
• 20 cm

MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
Find the value that is closest to the area of the
regular hexagon in the figure below with radius 6
cm.

• 36 cm2
• 45 cm2
• 90 cm2
• 108 cm2

MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
Quadrilateral ABCD is a rhombus with AC 16 in
and BD 12 in.What is the area of rhombus ABCD?

• 48 in2
• 96 in2
• 100 in2
• 192 in2

MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
Quadrilateral PQRS is a rhombus with PR 24 in
and QS 10 in.What is the area of rhombus PQRS?

• 60 in2
• 120 in2
• 169 in2
• 240 in2

MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).
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Geometry Mini-Lesson
Right triangle PQR has side lengths and height QS
as shown. What is the sum of perimeters of
triangles PQS and QRS, in inches? Please enter
your answer rounded to the nearest tenth.

• 78.4 in
• 39.2 in
• 30.0 in
• 19.2 in

MA.912.G.2.5 Explain the derivation and apply
formulas for perimeter and area of polygons
(triangles, quadrilaterals, pentagons, etc.).