Download 2 sided triangle worksheet 2. Today you will need

Thursday, October 27th
1. Write homework in your planner.
- 2 sided triangle worksheet
2. Today you will need
- Journal
- Folder
- Notebook
- Hmwk(MB 3-5 Prob Week -3)
Problem of the WeekDay 3
Round each number to the
nearest whole number.
209.82
210
32.06
32
Round each number to the
nearest tenth.
81.39
81.4
376.14
376.1
546.96
547.0
Math
Message
Math Journal page 75 - Use only
the information given to complete
the problems.
Math Journal Page 75
What do these marks represent?
The marks indicate sides
of the same length in the
given figure
These marks can also be called hatch marks, slash marks,
and tick marks.
Note: If a side has two marks, this DOES NOT mean
it is longer than a side with one mark.
Math Journal Page 75
What is the definition that you wrote on page
75 for the following triangles?
Has three sides that are the same
length. (equal)
Has least two sides that
are the same length.
Has no sides that are the
same length.
Equilateral
What word to you notice in that?
EQUAL - means the SAME
All sides are the same length.
All angles equal 60 degrees.
If an equilateral triangle has three angles
that equal 60 degrees, what is the sum?
60 x 3 =180 degrees
If all triangles have three sides and
three angles, what will be the sum of
all the angles?
180 degrees - no matter what
type of triangle you have!
Isosceles
At least two sides and two
angles are the same.
Can an isosceles triangle be an
equilateral triangle?
Yes, it only has to have two equal
sides, but it can have 3.
Is an equilateral triangle always
an isosceles triangle?
No! An isosceles triangle does not
have to have 3 equal sides.
Scalene
Has no equal sides or angles.
Can an scalene triangle be an
equilateral triangle?
No, an equilateral triangle has
three equal sides.
Can a scalene triangle be an
isosceles triangle?
No, an isosceles triangle has to
have at least two equal sides.
Pull
Define these triangles by their sides.
Triangle
7 cm
7 cm
3 cm
isosceles
After you identify an angle by its sides, you
can identify it by its angles.
What are these angles?
acute
right
obtuse
drag the dart to
the target to
check answers
Right
Has one right angle
(90 degrees).
Can a right triangle be an equilateral triangle?
No, an equilateral triangle
only has 60 degree angles.
Can a right triangle be an isosceles triangle?
Yes, it can still have
two equal sides.
Can a right triangle be a scalene triangle?
Yes, it could have three
different lengths of sides.
Acute
All angles are acute
(less than 90 degrees).
Can an acute triangle be an equilateral triangle?
Yes, all of the angles
are acute.
Can an acute triangle be an isosceles triangle?
Yes, it can still have
two equal sides.
Can an acute triangle be a scalene triangle?
Yes, it could have three
different lengths of sides.
Obtuse
Has one obtuse angle
(greater than 90 degrees).
Can a triangle have more than
one obtuse angle?
No, an obtuse angle is 90 degrees. If
it had 2 obtuse angles it would be
greater than 180 degrees.
Can an obtuse triangle be an equilateral triangle?
No, an equilateral triangle
has all acute angles.
Can an obtuse triangle be an isosceles triangle?
Yes, it can still have
two equal sides.
Can an obtuse triangle be a scalene triangle?
Yes, it could have three
different lengths of sides.
Pull
Define these triangles by their
sides and angles.
Triangle
cute
6m
8m
4m
scalene, right
Problem of the
WeekQuiz
Triagnle worksheet