Triangle Classification
Angle Sum Theorem
Exterior angle Sum
Isosceles Triangle Theorem
Algebra
100
Classify the triangle by angles.
Acute, Scalene Triangle
100
The sum of all the angles in a triangle is equal to _____?
180º
100
What is Exterior Angle Theorem?
The exterior angle theorem states that the measure of an exterior angle is equal to the sum of the measures of the two opposite(remote) interior angles of the triangle.
100
True or False: The base angles of an isosceles triangle are supplementary.
False. The base angles of an isosceles triangle are CONGRUENT.
100
(2,-4) and (-2,3)
8.1
200
Classify the triangle by angles AND sides.
Right, Scalene
200
Determine the measure of
angle w
w = 30º
200
What is the m∠ x
m ∠x= 149o
200
Given the triangle XVW is an isosceles triangle, what is the value of z?
z=67º
200
(3,-2) and (6,4)
6.7
300
Classify the triangle by angles AND sides.
Obtuse, Isosceles
300
Solve for s.
s = 27
300
What is the measure of the missing angle x?
What is 60o?
300
What is the value of u?
u=31º
300
(9,10) and (6,8)
3.6
400
Draw an example of a right isosceles triangle.
Draw on board
400
Solve for v.
v = 24
400
What is the value of y?
What is 15?
400
What is the value of x + w?
x + w = 144º
400
(6,-2) and (7,-5)
3.2
500
Draw a right equilateral triangle.
NOT POSSIBLE
500
A triangle has interior angle measures of (7b+12)°, (11b–9)°, and (18b–3)°. What is the value of b?
b = 5
500
What is the value of x and y?
What is 88o and 47o?
500
Solve for x.
x = 122º
500
(12,-13) and (-11,14)
35.5