classification by angles
classification by sides
angle pairs
triangle sum theorem
i'm feeling lucky!
100
What triangle has one 90o angle?
right triangle
100
What triangle has all congruent sides?
equilateral triangle
100
these pair of angles are called this and add up to this.
They are complementary angles and add up to 90 degrees
100
the triangle sum theorem states _________
the sum of angles in a triangle equals 180 degrees.
100
Is 90o an acute angle?
No, it's a right angle
200
What triangle has one angle larger than 90o?
obtuse triangle
200
What triangle has at least two congruent sides?
isosceles triangle
200
These pair of angles are called this and add up to this.
They are supplementary angles and add up to 180 degrees
200
What is the measure of angle C?
57o
200
What is the value of x?
6
300
What triangle has all angles less than 90o?
acute triangle
300
What triangle has no congruent sides?
scalene triangle
300
angle 4 and angle 2 are an example of this type of angle pair.
vertical angle pairs that are congruent.
300
What is the third angle of a triangle whose 1st angle is 34o and 2nd angle is 101o?
45o
300
A student is trying to construct triangles using four different sets of angles. The angles in each set are given below. Which set will form a triangle?
A. 45°, 65°, 70°
B. 50°, 50°, 50°
C. 150°, 110°, 100°
D. 90°, 90°, 90°
A
400
The angle measurements below form what type of triangle?
30 degrees, 65 degrees, and 95 degrees.
obtuse triangle
400
The side lengths below form what type of triangle?
10 inches, 12, inches, 10 inches.
isosceles triangle
400
Angle 1 and Angle 2 are supplementary. If angle 2 = 75o, what is angle 1?
105o
400
What is the measure of the missing angle?
50o
400
Angles that are across from each other and are congruent
What are vertical angles?
500
The angle measurements below form what type of triangle?
60 degrees, 55 degrees, and 65 degrees
acute triangle
500
The side lengths below form what type of triangle?
6 ft, 13 ft, and 15 ft
scalene triangle
500
Angle 3 and angle 4 are complementary. If angle 3 = 45o, what is angle 4?
45o
500
If the measure of triangle`s angle is 50 degrees, then 60 degrees. Find the value of 3rd angle?
70 degrees
500
A triangle has one angle that measure 81° and one that measures 37°. What is the measure of the third angle?
62o