Point, Line, Ray and Segments
What are lines made of?
Points
If an angle is exactly 90° it is called a...?
Right angle.
What do we call a 5 sided polygon?
Pentagon.
What is the perimeter of a regular triangle with 3 cm sides?
9 cm
(3 sides x 3 cm)
What is the name of the top part of the fraction?
Numerator.
Is this statement correct?
"Lines are infinite in both directions"
Yes it is.
If an angle is exactly 180° it is called a...?
Straight or Flat angle.
What do we call a 6 sided polygon?
Hexagon
What is the perimeter of a regular quadrilaterla with 6 cm sides?
24 cm
(4 sides x 6 cm)
What is the name of the bottom part of the fraction?
Denominator.
Does a RAY have a starting point and an end point?
No, it doesn't.
If an angle is smaller than 90° we call it an...?
Acute angle.
What do we call a 8 sided polygon?
Octagon
What is the perimeter of a regular pentagon with 4 cm sides?
20 cm
(5 sides x 4 cm)
Say this fraction with words:
5
----
8
Five eighths
Two or more lines that are always at the same distance and never touch are called...?
Parallel lines.
If an angle is bigger than 90° but smaller than 180°, we call it an...?
Obtuse angle.
The addition of the internal angles of a triangle is always...?
180°
What is the perimeter of a regular hexagon with 2 cm sides?
12 cm
(6 sides x 2 cm)
What whole number does this fraction represent?
27
---
9
3
(27/9 = 3)
What name do we give to two lines that cross at exactly 90°?
Perpendicular lines
What is the name of the tool that we use to measure angles?
It is called Protractor.
The addition of the internal angles of a quadrilateral always is...?
360°
What is the perimeter of a regular octagon with 3 cm sides?
24 cm
(8 sides x 3 cm)
Are these two fractions equivalent?
15 5
--- = ---
30 10
Yes, they are.
Because 15/3 = 5 and 30/3 = 10