Greeting space cadet! I am Captain Stargaze. Today I have a
very important mission for you. Princess Twilight has been captured
by the Knight of Polygon, and I need your help to rescue her! Click
on the planet to see what your mission is!
Slide 4
The planet of Polygon is divided into several different
countries. Princess Twilight is being held captive in Triangular, a
land of triangles. What is a triangle you ask? Click on the star to
find out
Slide 5
A triangle is one of the basic shapes of geometry: a polygon
with three corners and three sides which are straight line
segments.
Slide 6
A triangle has three angles. The sum of these three angles
always equals 180.
Slide 7
Your mission is to research and learn about triangles to
prepare to rescue Princess Twilight. Pay careful attention to the
way that triangles are classified! If you chose to accept this
mission, you must board the space ship by Clicking on it.
Slide 8
There are two different ways to classify triangles: By the
lengths of their sides. And by the size of their angles.
Slide 9
You recently learned about the different types of angles. Right
angle Acute angle Obtuse angle Straight angle
Slide 10
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle
Slide 11
Right triangles are triangles that have a right angle (90). 90
angle
Slide 12
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle
Slide 13
Acute triangles are triangles that have angles less than 90.
Less than 90
Slide 14
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle Obtuse
Triangle
Slide 15
An obtuse triangle is a triangle that has one obtuse angle (an
angle greater than 90). Greater than 90
Slide 16
Click on the BIG star to continue.
Slide 17
An obtuse triangle is a triangle that has one angle that is
Less than 90 Equals 90 Greater than 90 Equals 180
Slide 18
That is correct!! An obtuse triangle has an angle that is
GREATER than 90. Continue
Slide 19
Lets try that one again Rememberwhat does the word obtuse mean?
Click on the triangle to try again.
Slide 20
Triangles can be classified by the lengths of their sides and.
The size of their angles The shape that the make The amount of
angles they have The color of the triangle
Slide 21
That is correct!! Triangles are classified by the lengths of
their sides as well as the size of their angles. Continue
Slide 22
Maybe we should take another look at this. Click on the face
above to continue.
Slide 23
There are two different ways to classify triangles: By the
lengths of their sides. And by the size of their angles.
Slide 24
You recently learned about the different types of angles. Right
angle Acute angle Obtuse angle Straight angle
Slide 25
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle
Slide 26
Right triangles are triangles that have a right angle (90). 90
angle
Slide 27
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle
Slide 28
Acute triangles are triangles that have angles less than 90.
Less than 90
Slide 29
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle Obtuse
Triangle
Slide 30
An obtuse triangle is a triangle that has one obtuse angle (an
angle greater than 90). 180
Slide 31
There are three different types of triangles that are
classified by the size of angles: Acute, obtuse, and Isosceles
triangle Straight triangle 90 triangle Right triangle
Slide 32
Wow! You really know your stuff! Click on the yellow star to
continue!
Slide 33
Maybe we should take another look at this. Click on the face
above to continue.
Slide 34
There are two different ways to classify triangles: By the
lengths of their sides. And by the size of their angles.
Slide 35
You recently learned about the different types of angles. Right
angle Acute angle Obtuse angle Straight angle
Slide 36
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle
Slide 37
Right triangles are triangles that have a right angle (90). 90
angle
Slide 38
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle
Slide 39
Acute triangles are triangles that have angles less than 90.
Less than 90
Slide 40
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle Obtuse
Triangle
Slide 41
An obtuse triangle is a triangle that has one obtuse angle (an
angle greater than 90). Greater than 90
Slide 42
Alright, you are doing a great job so far! Lets continue on.
Click on the star to continue.
Slide 43
You can also classify triangles by the length of their sides.
There are three different types of triangles. 1. Isosceles 3.
Scalene 2. Equilateral Click on each to learn more.
Slide 44
An Isosceles triangle is a triangle that has TWO sides that are
the same length. Click on star to continue
Slide 45
You can also classify triangles by the length of their sides.
There are three different types of triangles. Click on each to
learn more. 1. Isosceles 3. Scalene 2. Equilateral
Slide 46
An Equilateral triangle is a triangle that has three equal
sides. This means that all of the sides have the same length.
Slide 47
Equilateral triangles not only have three equal sides, but they
have three angles that are equal as well. The angles of an
equilateral triangle equal 60 each. If you add all three angles
together, it equals 180.
Slide 48
You can also classify triangles by the length of their sides.
There are three different types of triangles. Click on each to
learn more. 1. Isosceles 3. Scalene 2. Equilateral
Slide 49
A scalene triangle is a triangle that has three sides with
different lengths.
Slide 50
This is your FIRST challenge in rescuing the princess. Think
hard about your answer! Click on the creature above to
continue.
Slide 51
Select the isosceles triangle Remember: An isosceles triangle
is a triangle with two equal sides.
Slide 52
Great job! You really know your stuff! You are one step closer
to rescuing the princess! Click on the face to continue!
Slide 53
Im sorry, that is not correct. Lets try that one again! Click
on the face above to continue.
Slide 54
Select the angle that equals 90 and is used to create a right
triangle. Click the letter to choose you answer.
Slide 55
Thats right! You sure know how to classify triangles by angles!
Click on the space creature to continue.
Slide 56
No, that is not right! Take another look at the angles. I know
you know this! Click on the face to go back and try again.
Slide 57
Well, Earthling. It looks like you really know your stuff. But
will it be enough to rescue the princess? I guess we shall see..
Click on the BIG star to continue.
Slide 58
This is a type of triangle that has angles that are less than
90. Isosceles triangle Acute triangle Obtuse triangle Right
triangle
Slide 59
I am so glad that I picked you to help rescue the princess!
Click on the rocket to continue.
Slide 60
Click on the face to continue.
Slide 61
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle
Slide 62
Right triangles are triangles that have a right angle (90). 90
angle
Slide 63
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle
Slide 64
Acute triangles are triangles that have angles less than 90.
Less than 90
Slide 65
These types of angles are also used to classify triangles.
Click on each to learn more. Right Triangle Acute Triangle Obtuse
Triangle
Slide 66
An obtuse triangle is a triangle that has one obtuse angle (an
angle greater than 90). Greater than 90
Slide 67
A scalene triangle. Is a triangle that has three sides with
different lengths. Is a triangle is a triangle that has two sides
that are the same length. Is a triangle that has three equal sides.
This means that all of the sides have the same length.
Slide 68
That wont help in trying to save the princess!!
Slide 69
You are really getting the hang of this! Good Job! Click the
face to continue.
Slide 70
You have one more question to answer to save the princess from
the evil Knight of Polygon! Be sure to answer carefully. GOOD LUCK!
Click on the princess to answer the final question!
Slide 71
What is ALWAYS the sum of all three angles of any triangle? 90
180 360 270
Slide 72
Come on! I know you know this! Lets review some information
about triangles. Click the triangle to continue.
Slide 73
A triangle is one of the basic shapes of geometry: a polygon
with three corners and three sides which are straight line
segments.
Slide 74
A triangle has three angles. The sum of these three angles
always equals 180.
Slide 75
Job well done, my friend! Click on Captain Stargaze to
continue
Slide 76
You have successfully rescued Princess Twilight from the Knight
of Polygon! Well done! The End