Download triangles - Legacy Traditional Schools, Tucson

Drill
1)
2)
3)
Benjamin put 2 blue marbles, 7 red and 1 brown, in a bag
and shook the bag. If he reaches in and chooses a marble
without looking, what is the probability that he chooses a red
marble? If he gives the red marble to a friend and then picks
again, what is the probability he will pick a brown marble?
The basketball team’s point-per-game average is 88 after its
first four games. How many points does the team need to
score during its 5th game to have a points-per-game average
of 90?
4.) Determine the area:
TRIANGLES
CLASSIFICATIONS, ANGLES AND
MORE!!
Different Types of Triangles
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There are several different types of triangles.
You can classify a triangle by its sides and its
angles.
There are THREE different classifications for
triangles based on their sides.
There are THREE different classifications for
triangles based on their angles.
Classifying Triangles by Their Sides
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EQUILATERAL – 3 congruent sides
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ISOSCELES – at least two sides
congruent
EQUILATERAL
ISOSCELES
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SCALENE – no sides congruent
SCALENE
Classifying Triangles by Their
Angles
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ACUTE – all angles are acute
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RIGHT – one right angle
ACUTE
RIGHT
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OBTUSE – one obtuse angle
OBTUSE
Can You Classify the Different
Triangles in the Picture Below?
Classify the following triangles: AED, ABC, ACD, ACE
The Classifications…
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Triangle AED = Equilateral, Equiangular
Triangle ABC = Equilateral, Equiangular
Triangle ACD = Isoceles, Obtuse
Triangle ACE = Scalene, Right
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So how did you do?
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Word Problems
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Two sides of a triangle measure 5 and 7 inches
and the perimeter is 17 in. What type of triangle
is it?
A triangle is isosceles. The perimeter is 14 cm.
and the longest side is 6 cm. What are the
lengths of the other 2, shorter sides?
All 3 sides of triangle FGH are congruent.
What are the angle measures of angle F, G and
H?
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Order the sides of the triangle from shortest to
longest.
B
A
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C
Which sides of the triangle are the same length?