What's my angle?
Lines & Angles
Triangles
Quadrilaterals
Symmetry
100
What is the definition of a quadrilateral?
A polygon with 4 sides and 4 angles
100
Does every hexagon have 6 angles?
YES! Lets count.
100
I am a triangle with one pair of perpendicular lines.
What type of triangle am I?
100
What pair of quadrilaterals have 4 congruent sides?
Congruent means same size same shape
100
How many lines of symmetry do I have?
4
200
What is the definition of a polygon?
A closed figure made with straight lines.
A circle is not a polygon because it is not made with straight lines.
200
Think about a regular octagon. In a regular shape all lines and angles are congruent, same size & same shape.
What type of angles are found in a regular octagon?
OBTUSE angles
200
I am a triangle. My angles measure 90o, 45o and 45o.
What type of triangle am I?
Right Triangle
200
Complete the following facts about a square -
1. It is a rectangle because ....
2. It is a parallelogram because ...
3. It is a polygon because ...
4. It is a quadrilateral because ...
5. It is NOT a circle because ...
1. It is a rectangle because .... it has 4 right angles.
2. It is a parallelogram because ... it has two pairs of parallel lines.
3. It is a polygon because ... its a closed figure with straight sides.
4. It is a quadrilateral because ... it has 4 sides.
5. It is NOT a circle because ... a circle has curved sides, it is not a polygon,...
200
How many lines of symmetry do I have?
2
300
What is the definition of a rectangle?
A quadrilateral with 4 right angles, opposite sides are congruent.
All squares are rectangles but not all rectangles are squares.
300
How many pairs of parallel lines does a regular octagon have?
4 Pairs
300
I am a triangle. What is the sum of all my angles?
180o
300
I am a quadrilateral. I have -
...one pair of parallel sides,
...two right angles,
...one acute and one obtuse angle.
What am I?
300
How many lines of symmetry do I have?
2
400
What is the definition of a parallelogram?
A quadrilateral with two pairs of parallel lines
Examples are square, rectangle, rhombus, and parallelogram
400
Which of these polygons does not have any pairs of parallel lines?
A B C
Polygon A, the pentagon
400
I am a triangle. My angles measure 100o, 40o, and 40o. What type of triangle am I?
Obtuse Triangle
400
Which 2 quadrilaterals have 4 right angles?
400
How many lines of symmetry do I have?
0
500
What is the definition of a trapezoid?
It is a quadrilateral with one pair of parallel sides.
500
How many pairs of parallel sides does a regular pentagon have?
NONE!
500
If you cut a rectangular piece of paper diagonally to make 2 equal triangles. What type of triangles will you make?
Right Triangles
500
I am a quadrilateral
Only my opposite sides are congruent.
I have 2 acute and 2 obtuse angles.
What am I?
500
How many lines of symmetry do I have?
"regular" polygons:
5 sides = 5 lines of symmetry
# of lines of symmetry = # of sides