Points, Lines and Rays
Define a point, line and ray.
A line goes on forever in both directions, a ray is a line with one fixed endpoint, and a point is a position on a line or a ray.
Define an angle.
What do you call an 8-sided shape?
An octagon
Define area and perimeter.
Area is the space a shape takes up; Perimeter is the distance around a shape.
Which is longer: a line or a ray?
How many angles are in a rectangle?
Four. One in each corner.
If the perimeter of a pentagon is 50, what is the length of its sides?
10. 10 + 10 + 10 + 10 + 10 = 50
What is the area of a room that measures 12 feet by 10 feet?
12 x 10 = 120
What's a real life example of a "line segment"?
Any line! Lines of people, lines of cars, lines of products at the grocery store, etc.
What are the three main types of angles?
Acute: less than 90 degrees
Obtuse: more than 90 degrees
Right: exactly 90 degrees
What are two shapes that have parallel lines?
Rectangles, squares, trapezoids, parallelograms...
What is the perimeter of a room that measures 30 feet by 25 feet?
30 + 30 + 25 + 25 = 110 feet
What's the shortest distance between Points A and B?
A straight line.
How many degrees total would you have if you put three right angles together?
270. 90 + 90 + 90 = 270
What is a shape that does not have parallel lines?
Triangles, circles, ovals...
The area of a rectangle is 100. One of the sides is 5. What is the other side?
20. 20 x 5 = 100
How many line segments can be found in a triangle?
Three. A triangle's sides are line segments.
If a square has 360 degrees total, how many degrees is each of its 4 angles?
90 degrees. 360 / 4 = 90
How do you find the area of a triangle?
If you can extend it into a rectangle, you can find the area of a rectangle first, then cut that number in half.
The formula for area of a triangle is Area = 1/2 (base x height)
The perimeter of a square is 52. What is the length of its sides?
13. 13 + 13 + 13 + 13 = 52