Triangles
Angles
Angle pairs
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100
I have one 90 degree angle.
A right triangle
100
I am any angle that is less than 90 degrees.
an acute angle
100

What are supplementary angles

angles that add up to 180 degrees

100
I am a triangle with 2 sides that are the same length
isosceles triangle
100
How many degrees do the angles in a triangle add up to?
180 degrees
200
I have 3 sides that are all the same length
equilateral triangle
200
I am an angle that is greater than 90 degrees
an obtuse angle
200

What are complementary angles?

Angles that add to 90 degrees

200
All of my angles are less than 90 degrees
acute triangle
200
Describe a scalene triangle
ALL sides are DIFFERENT LENGTHS
300
I am a triangle with 1 angle greater than 90 degrees and 2 angles less than 90 degrees
an obtuse triangle
300
I am an angle that measures exactly 90 degrees
a right angle
300

What angle is complementary to a 74 degree angle?

16 degrees

300
I am a triangle with 3 sides that are all different lengths
scalene triangle
300
This question is about a triangle: If angle A is 40 degrees and angle B is 60 degrees, what is the measurement of angle C?
40 + 60 = 100 180 - 100 = 80 degrees
400
Describe an Isosceles triangle
A triangle with TWO sides that are the same LENGTH and ONE side that is a DIFFERENT LENGTH
400
I am a straight angle, what is my measurement in degrees?
180 degrees
400

What angle is supplementary to 88 degrees?

92 degrees

400
Draw a right triangle
(See student work)
400
Two triangles that are exactly the same size and same shape are called...
congruent
500
is it possible to have a triangle with 2 right angles?
no
500
What 2 types of angles do you find in the letter A?
Acute and obtuse angles
500

Are vertical angles congruent or supplementary?

Congruent

500
Draw an isosceles triangle
(See student work)
500
Brandon draws a triangle that has one 160 angle. What is the measurement of each of the other two angles in the triangle?
180 - 160 = 20 20 / 2 = 10 Each angle is 10 degrees