Triangles
The sum of the 3 angles in a triangle
180
Find the hypotenuse:
Smallest side = 6
Medium side = 8
Largest side = ?
10
Pair of Complementary Angles
Any Acute (2, 3, 6, 7) and any Obtuse (1, 4, 5, 8)
Two angles that add up to 90 degrees are called __________.
Complementary Angles
States that the sum of each leg squared is equal to the length of the longest side squared. Works only for right triangles.
Pythagorean Thm
Number of obtuse angles in an obtuse triangle
1
What is the Hypotenuse?
The Longest side (c)
What is a transversal?
A line that intersects two or more lines
Two congruent angles that are across from each other are called ________?
Vertical
A triangle with 3 equal sides
Equilateral
Angle 1 = 30
Angle 2 = 60
Angle 3 = ?
What type of triangle is this?
90, Right Triangle
The final step of Pythagorean Thm is to ______.
Square Root
If Angle 8 is 120, find Angle 6
60
Two angles that add up to 180 degrees
Supplementary
Two angles are supplementary. One angles measures 105 degrees. What is the measure of the other angle?
75
Angle 1 = 28
Angle 2 = 134
Angle 3 = ?
What type of triangle is this? (2 answers)
18, Obtuse and Scalene
a = 15
b = 20
c = ?
25
If Angle 7 = 2x, find Angle 2
2x
An angle that measures 180 degrees
Straight
What does it mean to be congruent?
Same/Equal
What is the measure of one angle in an Equilateral Triangle?
60
a = ?
b = 8
c = 10
6
Name all angles congruent to Angle 1
4, 5, 8
An angle that measures 90 degrees
Right
Draw the symbol for congruence
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