Notes Over 9 - 3 Classifying Polygons A polygon with three sides is a _____________. Classifying triangles by angles. Acute Triangle 3 acute angles Right.

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Presentation transcript:

Notes Over Classifying Polygons A polygon with three sides is a _____________. Classifying triangles by angles. Acute Triangle 3 acute angles Right Triangle 1 right angle Obtuse Triangle 1 obtuse angle

Notes Over Classifying Polygons A polygon with three sides is a _____________. Classifying triangles by sides. Scalene Triangle no congruent sides Equilateral Triangle 3 congruent sides Isosceles Triangle 2 congruent sides

Notes Over Classifying Polygons Judging by appearance, classify each triangle by its sides and angles. 1. Scalene Right 2. Equilateral Acute 3. Isosceles Obtuse

Notes Over Classifying Polygons A polygon with four sides is a ________________. Classifying quadrilaterals by angles and sides.

Notes Over Classifying Polygons Judging by appearance, classify each quadrilateral by its sides and angles. RectangleParallelogramTrapezoid

Notes Over Classifying Polygons A polygon with all sides and all angles congruent is a _____________ polygon. 7. Write a formula to find the perimeter of a regular pentagon. 8. Use this formula to find the perimeter if one side is 16 cm.

Pg – 3 #1 – 8, 9 – 26 Sketch each figure. 1. an isosceles right triangle.

Pg – 3 #1 – 8, 9 – 26 Sketch each figure. 2. a scalene obtuse triangle.

Pg – 3 #1 – 8, 9 – 26 Sketch each figure. 3. an isosceles obtuse triangle.

Pg – 3 #1 – 8, 9 – 26 Find the perimeter of each figure cm 3.5 cm

Pg – 3 #1 – 8, 9 – 26 Find the perimeter of each figure. 5. An equilateral triangle that has a side of 36 yd

Pg – 3 #1 – 8, 9 – 26 Find the perimeter of each figure. 6. a square that has a side of 5.1 cm

Pg – 3 #1 – 8, 9 – 267. Draw a parallelogram without a right angle but with four congruent sides. What is another name for this figure?

Pg – 3 #1 – 8, 9 – Draw a regular quadrilateral.

Notes Over Classifying Polynomials