2D Shapes
Triangles
Quadrilaterals
Points and Lines
3D Shapes
100
Define a right angle, an acute angle, and an obtuse angle. How many degrees is each?
Right = 90 degrees. Acute = between 0 and 90 degrees. Obtuse = between 90 and 180 degrees.
100
How do we define a triangle?
Any polygon with three sides
100
What is the definition of a quadrilateral?
Any polygon with four sides.
100
A number line can be described as a ____. Explain why.
(a) line
(b) ray
(c) line segment
(a) line, because it extends infinitely in both directions.
100
Label the following as true or false:
A: An edge is where the vertices meet.
B: A face is the area of one side of the shape.
C: A vertex is where two faces meet.
A: FALSE. A VERTEX is where the edges meet.
B: TRUE.
C: FALSE. An EDGE is where two faces meet.
200
On your board, draw a triangle with all acute angles.
Answers may vary
200
Give the triangle below a name based on its sides AND its angles.
Obtuses isosceles
200
Which quadrilateral is this? How can we define it?
Trapezoid; only has one pair of parallel sides
200
When two lines cross, they are called ____________ lines. If the lines are extended and will never cross, they are called __________ lines.
intersecting; parallel
200
What is the following shape? How many faces does it have?
Rectangular Prism. 6 faces.
300
On your board, draw a quadrilateral with only one right angle.
Answers may vary
300
How could we describe slices of pizza, assuming they were perfect triangles? (Give a name by its sides AND its angles)
Acute isosceles
300
Which quadrilateral is this? How can we define it?
Parallelogram; has two opposite pairs of parallel sides
300
The blue lines are ________. The red line is _________ the blue lines.
Parallel; intersecting
300
What is the following shape? How many faces, edges, and vertices does it have?
Cube. 6 faces, 12 edges, 8 vertices.
400
On your board, draw a pentagon with 1 right angle.
Answers may vary
400
Describe the triangle below by its sides and angles.
Acute scalene
400
Which quadrilaterals are equilateral?
Rhombuses and squares
400
1. Which lines are perpendicular to each other?
2. Which lines are parallel to each other?
1. Line K and Line T OR Line L and Line T are perpendicular
2. Line K and Line L are parallel
400
The figure below has two names. Give one of them. OR give both for double points!
Triangular pyramid or tetrahedron
500
On your board, draw an octagon with 3 right angles.
Answers may vary
500
How could we describe the triangle below by its sides and angles?
Right isosceles OR right scalene
500
Which quadrilaterals are equiangular?
Rectangles and squares
500
1. Draw a number line on your board. Write 20 tick marks. The first tick mark will be labeled "0". The last tick mark will be labeled "140". What is the increment? (What is each tick mark worth?)
2. Mark 84 on your number line.
See student responses
500
The following diagram is called a ___. When folded up, it will make a _________ _______.
Rectangular pyramid OR square pyramid