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iRubric: Area & Perimeter of Triangles rubric

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Area & Perimeter of Triangles Area & Perimeter of Triangles Measuring and calculating the area and perimeter of a triangle. Rubric Code: UX2BX53 By archieb Ready to use Public Rubric Subject: Math Type: Assignment Grade Levels: 6-8

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	4 4 pts	3 3 pts	2 2 pts	1 1 pts
Picture of Triangle	4 Picture is drawn neatly and all measurements are included and labeled correctly	3 Picture is drawn, either the measurements or the labels are left off	2	1 Only picture is included.
Area of Triangle	4 Calculation is correct, work is shown, and correct label is included.	3 Calculation is correct, work not shown, correct label on answer.	2 Calculation is correct, work not shown, and wrong/missing label.	1 Incorrect calculation, work may or may not be shown, wrong/missing label.
Perimeter of Triangle	4 Calculation is correct, work is shown, and correct label is included.	3 Calculation is correct, work not shown, correct label on answer.	2 Calculation is correct, work not shown, and wrong/missing label.	1 Incorrect calculation, work may or may not be shown, wrong/missing label.
Difference of Two Triangles	4 Difference for Area & Perimeter between the two triangles is calculated correctly, work is shown, and correct label is included.	3 Calculation is correct, work not shown, correct label on answer.	2 Calculation is correct, work not shown, and wrong/missing label.	1 Incorrect calculation, work may or may not be shown, wrong/missing label.
illustrating proof	4 formula is stated, diagram is drawn, labels are shown,accurate explanation is given accompanied by proper illustration of the concept.	3 formula is stated, diagram is drawn, labels are shown,explanation is given,accompanied by some illustration of the concept	2 formula is stated, diagram is drawn, labels are lacking or incomplete, explanation is incomplete, no illustration of concept	1 only formula and diagram are given accompanied by inaccurate labeling.