Polygons Grade 6

Types of Triangles

100

An equilateral Triangle has ___ equal sides, ___ lines of symmetry, and each angle is ___°.

3 equal sides, 3 lines of symmetry, 60°

200

An Isosceles Triangle has ___ equal sides, ___ lines of symmetry, and ___ equal angles.

2 equal sides, 1 line of symmetry, 2 equal angles

300

A Scalene triangle has ___ equal sides, ___ equal angles, and ___ lines of symmetry.

0 equal sides, 0 equal angles, 0 lines of symmetry.

400

I am a triangle with side lengths 4cm, 3cm, and 4cm. My angles are 50°, 80°, and 50°. What type of triangle am I?

Isosceles

500

I am a right triangle. Is it possible for me to be Scalene?

Yes

Triangles by Angles

100

All of my angles are less than 90°. What kind of triangle am I? (Acute, Right, Obtuse)

Acute

200

I have one angle that is 90°. What type of Triangle am I? (Acute, Right, Obtuse)

Right

300

I have 1 angle greater than 90°. What type of triangle am I? (Acute, Right, Obtuse)

Obtuse

400

I have 2 angles greater than 90°. What type of triangle am I?

Not possible

500

All Acute Triangles are also Scalene Triangles. True or False?

False - A Scalene Triangle has NO equal sides or angles. An Acute triangle could have equal angles. 

Polygons vs. Non-Polygons

100

Give 3 examples of a Polygon (3 different shapes)

Answers Vary 

200

What are the 3 rules that make up a polygon?

1) It must be a closed shape

2) All sides must be straight

3) Only 2 lines must meet at each vertex

300

Is a circle a Polygon? Explain your answer.

No- A circle does not have straight lines.

400

What does each of the following prefixes mean?

Uni-

Tri-

Hexa-

1

3

6

500

What does each of the following prefixes mean?

Bi-

Quad-

Penta-

2

4

5

Types of Polygons

100

What are the four types of Polygons? (Not including Congruent)

Regular, Irregular, Concave, Convex

200

Can a Regular Polygon be Concave?

No, a regular polygon must be convex.

300

All of my angles are less than 180°, and all of my sides and angles are equal. What type of Polygon am I? (2 answers)

Regular - Convex

400

All of my angles are less than 180°, but none of my sides and angles are equal. What type of polygon am I? (2 answers)

Irregular- Convex

500

None of my sides or angles are equal, but one of my angles is greater than 180°. What type of polygon am I? (2 answers)

Irregular- Concave

Perimeter of Polygons

100

What is the formula for the Perimeter of ANY Polygon?

Perimeter = S + S + S + S...

200

What is the formula for the Perimeter of a Parallelogram?

Perimeter = 2xL + 2xS

OR

Perimeter = 2 x (L + S)

300

What is the formula for the perimeter of a regular polygon?

Perimeter = Side Length x Number of Sides

400

I am a Polygon with 5 sides. My side lengths are 3cm, 2cm, 5cm, 6cm, and 4cm. What is my Perimeter?

Perimeter = S + S + S + S + S

Perimeter = 3 + 2 + 5 + 6 + 4

Perimeter = 20cm

500

I am a Parallelogram with side lengths 4cm and 5cm. What is my perimeter?

Perimeter = 2 x L + 2 x S

Perimeter = 2 x 4 + 2 x 5

Perimeter = 8 + 10

Perimeter = 18cm