Identifying Points & Lines
Measuring Segments & Angles
Pairs of Angles
Formulas in Geometry
Vocabulary
100
What are these?
Points
100
Point B is the midpoint of line segment AC. AB = 6, BC = 6, what is the length of AC?
12
100
Supplementary Angles add up to ______?
Complementary Angles add up to _______?
180 degrees
90 degrees
100
What is this formula for the area of a triangle?
base x height divided by 2
100
Points that are on the same line; Points that are on the same plane
Collinear; Coplanar
200
What is this?
Line Segment
200
Q is between line segment PR, PR = 52, PQ = x + 2, QR = 4x - 15. What is the length of PQ and QR?
PQ = 15
QR = 37
200
A line segment has _________ endpoint(s).
2
200
Find the area and perimeter of a rectangle whose length is 10 and width is 5.
Area = 50
Perimeter = 30
200
This type of angle measures more than 90 degrees
Obtuse angle
300
What is this.
Line
300
Find the complement of an angle that measures 20 degrees.
Find the supplement of an angle that measures 80 degrees.
Complement = 70 degrees
Supplement = 100 degrees.
300
Two rays that share a common endpoint and extend in opposite directions are called ________
Opposite rays
300
Find the perimeter and the area of triangle with sides 8,12, base 10 cm and height 15 cm. (Round to two decimal places)
P = 30
A = 75 squared centimeters
300
A rule that is accepted without proof
Postulate (or axiom)
400
I am a part of a line that starts at an endpoint and extends forever in one direction. What am I?
Ray
400
Angle A and angle B are complementary angles. Angle A = 5x + 2, angle B = 3x + 8. Find the value of x AND the measures of angle A and B.
x = 10
Angle A = 52
Angle B = 38
400
What are the two common things found in adjacent angles?
Common Vertex
Common Side
400
Find the distance AND the midpoint of the points (3,8) (-6, -4)
Midpoint = (-3/2 , 2)
Distance = 15
400
Point, ray, line, line segment, or plane that intersects the segment at its midpoint.
Segment Bisector
500
I am a flat surface that infinitely large and with zero thickness. What am I?
A plane.
500
Supplementary angles A and B are a linear pair. Angle A = 20 what is angle B?
Angle B = 160
500
True or False
All linear pairs are supplementary angles but not all supplementary angles are linear pairs?
True
500
What is the area of a circle with radius 2m?
4pi
500
Two angles that share a common vertex and side, BUT have no common interior points.
Adjacent Angles