Line Figures
What is the name for an exact location in space, usually represented by a dot?
Point
What type of lines cross at one point?
Intersecting Lines
What is an angle that measures exactly 90 degrees?
Right Angle
What is the measurement of all the angles of a triangle added together?
180 degrees
How many lines of symmetry does the figure have? LOOK at slide 5
1
What is a straight path that extends forever in both directions?
Line
What type of lines will never cross and stay the same distance apart?
Parallel Lines
What is an angle that measures greater than 90 degrees but less than 180 degrees?
AND What is an angle that measures less than 90 degrees?
Obtuse angle
Acute angle
Name the triangles that have:
1) All acute angles
2) One obtuse angles
3) One right angle
1) Acute triangle
2) Obtuse triangle
3) Right triangle
Which figure is symmetrical? LOOK at the slide 1
Mustache
What do you call a part of a line that has one endpoint and extends forever in only one direction?
Ray
What is a special name for lines that intersect to form a right angle?
Perpendicular Lines
What are the measurements of half of a circle and a full circle?
Half circle= 180 degrees
Full circle= 360 degrees
Name the triangles that have:
1) All equal lengths in sides
2) Two equal lengths in sides
3) All different lengths in sides
1) Equilateral
2) Isosceles
3) Scalene
Which figure is NOT symmetrical? LOOK at slide 2
Hat
K
Umbrella
Truck
What is the difference between a line segment and a line?
A Line Segment has two endpoints and a definite length, and a Line extends infinitely in both directions.
Line WV is perpendicular to line _____.LOOK at slide 3
Line RS
What is the measurement of the missing angle? LOOK at slide 6
110 degrees
Name the triangle. LOOK at slide 4
An acute, scalene triangle
Create a word that only uses letters that have lines of symmetry.
Examples:
MAT
HAT
MUT
WHAT