Fun with Angles and Polygons A unit for learning about geometry Ms. Collette Robitaille

Fun with Angles and Polygons

A unit for learning about geometry

Ms. Collette Robitaille

Introduction to Geometry

• Unit 1: Angles (2 days)• Unit 2: Triangles (2 days)• Unit 3: Quadrilaterals (2 days)• Geometry Webquest (5 days)• Review Activities (3 days)• Test (1 day)

*This is a 3 week unit of instruction.

Unit One: Exploring Angles

Can you name the following angles?

Click on the angle to reveal its name.

obtuse acute

right straight

Angle Information

• Acute Angles – measure less than 90º

• Right Angles – measure exactly 90º

• Obtuse Angles – measure more than 90º but less than 180º

• Straight Angles – measure exactly 180º

• Can you think of a way to remember the names for each angle?

Angles TaskActivity

• For this activity, you will be paired up with a partner to visit the following website.

• After clicking below, skip the intro and click on the Make the

Angle Game.

• You and your partner must make 10 angles and record them on a sheet of paper.

• Once you have recorded 10 angles, tell what type of angle it is.

http://www.amblesideprimary.com/ambleweb/mentalmaths/protractor.html

Unit One: Angles Quick Check

Question #1An acute angle is greater than 90º.

A. True

B. False

Unit One: Angles

OOPS!!!!!

Remember an acute angle is a cute little angle.

Try Again

Unit One: Angles

Congratulations!!!!!

An acute angle is less than 90º.


Question #2

An obtuse angle is greater than

90º but less than 180º.

A. True

B. False


OOPS!!!!!

Better check again. Obtuse angles are almost right and not

quite straight.

Try Again


Congratulations!!!!

An obtuse angle is between 90ºand 180º.


Question # 3

A straight angle measures 180º.

A. True

B. False


OOPS!!!!!

Remember. A straight angle looks like a straight line.

Try Again


Congratulations!!!!

A straight angle measures 180º and looks like a straight line.


Question #4

A right angle does not measure

90º.

A. True

B. False


OOPS!!!!!

A right angle looks like the corner of a piece of paper.

Try Again


Congratulations!!!!

A right angle does measure exactly 90º.

Unit Two : Triangles

Can you identify theses triangles by their angles?

Right acute obtuse

Click on the angle to check your answer.

Unit Two: Triangles

• Right Triangles - have exactly one right angle.

• Acute Triangles – all angles are less than 90º.

• Obtuse Triangles - have exactly one angle greater than 90º.

Unit Two: Triangles

Can you identify these triangles by their sides?

isosceles scalene equilateral

Click on the triangle to check your answer.

Unit Two: Triangles

• Isosceles Triangles - two sides are of equal length

• Scalene Triangles - no sides are equal in length

• Equilateral Triangles - all sides are of equal length

Triangles Task

• For this task, you and your partner, must complete the activity on the webpage listed below. Review the triangles and then click Triangles Quiz. Write your answers on a sheet of paper.

Triangles Review

Unit Three: Quadrilaterals

Can you identify the following quadrilaterals?

parallelogram rectangle

square

rhombus trapezoid

Click on the quadrilateral to check your answer.


• Parallelograms - 4-sided figure, opposite sides are parallel and congruent

• Rectangle – 4 sided figure with 4 right angles and opposite side congruent

• Square – 4 sided figure with 4 right angles and 4 congruent sides

• Rhombus – 4 sided figure, all sides are congruent

• Trapezoid – 4 sided figure with one pair of parallel lines

Quadrilaterals Task

• For this task, you and your partner should visit the following website.

• Using the virtual geoboard you and your partner will need to construct each of the five quadrilaterals we have discussed.

• To complete the assignment, on a sheet of paper, tell how many geobands were needed to create each quadrilateral.

http://matti.usu.edu/nlvm/nav/frames_asid_129_g_3_t_3.html

Unit Three: Quadrilaterals Quick Check

Question #1

A rectangle is a four sided figure with 4

congruent sides.

A. True

B. False


OOPS!!!!!!!!

Think about it. A rectangle looks like a long box.

Try Again


Great!!!!!!!!!

You remembered that a rectanglehas 2 parallel sides, 4 rightangles, and opposite sides arecongruent.


Question #2

A rhombus has four congruent sides.

A. True

B. False


OOPS!!!!!!!!

Remember that a rhombus looks like a kite or a diamond.

Try Again


HOORAY!!!!!!

You remembered that a rhombus

looks like an italic square and all 4

sides are congruent.


Question #3

A square is a quadrilateral with only two right

angles.

A. True

B. False


OOPS!!!!!!!!!

A square has all sides congruent and all angles congruent.

Try Again


Nice Job!!!!!!!

You knew that a square has four

equal sides and four equal angles.


Question #4

A trapezoid is a four sided figure with one set

of parallel sides.

A. True

B. False


OOPS!!!!!!

Think of the tables in a classroom. It looks like a triangle without the

top.

Try Again


AWESOME!!!!!!!

A trapezoid has exactly one set of

parallel sides.


Question #5

A parallelogram has two sides that are

parallel and opposite angles are congruent.

A. True

B. False


OOPS!!!!!!

Remember that a parallelogram looks like an italic rectangle.

Try Again


Nice Work!!!!!

A parallelogram is a 4 sided figure

with opposite sides parallel and

opposite angles congruent.

Unit Four: Geometry Web Quest

Unit Four: Geometry Web Quest

• For this part of the unit I would like for you and your partner to explore geometry using the internet.

• There are two web quests listed below.• Follow the directions for each and turn in

your completed project. Have fun!!!

Web Quest #1

Web Quest #2

Unit Review

• Go back through the slide show to complete the review sheet given to you.

• Remember to look at the quizzes for possible answers.

• Enjoy your time using the interactive unit

• Test tomorrow on our Introduction to Geometry.

Documents

Fun with Angles and Polygons A unit for learning about geometry Ms. Collette Robitaille