How many sides/angles does a quadrilateral have?
4
Two lines that never cross (touch) are called ______________.
Parallel Lines
What type of angle is this angle?

Obtuse
What are the values of the interior angles of an equilateral triangle?
60 degrees
Area of a Rectangle
A rectangle has a length of 6 cm and a width of 4 cm. What is its area?
24 cm²
(Area = length × width = 6 × 4 = 24)
A triangle with 3 equal sides is called what? 
Equilateral Triangle
True or False: A square has to have all right angles
True
True or False: A rhombus has to have 4 right angles?
False
What is the area of a triangle with a base of 12 cm and a height of 9 cm?
54 cm2
Area of a Rectangle
A rectangle has a length of 12 cm and a width of 5 cm. What is its area?
60 cm²
(Area = length × width = 12 × 5 = 60)
True or False? A rhombus has to have all equal sides
True
What is a triangle classified as when it has 2 sides of equal length?
Draw and label an isosceles triangle.
Check answer with teacher.
A trapezoid has these measurements,
base: 7 in
base: 13 in
height: 5 in
What is the area?
50 in2
Area of a Triangle
A triangle has a base of 10 cm and a height of 8 cm. What is its area?
40 cm²
A square has one side that is 12 cm long. What is the PERIMETER of the square? What is the AREA?
Remember: You will have two answers- perimeter and area.
Perimeter- 48 cm
Area- 144 sq cm
Calculate the Perimeter
A rectangle has a length of 12 meters and a width of 8 meters. What is the perimeter of the rectangle?
40 meters
(Perimeter = 2 × (Length + Width) = 2 × (12 + 8) = 40)
Name the Angle
An angle measures 45°. What type of angle is it? Why?
Acute angle
(An acute angle measures less than 90°.)
What is the sum of the interior angles of a 12 sided polygon?
1800 degrees
Angles in a decagon
What is the total sum of all the angles in a decagon when added together?
1440 degrees
What is the sum of the interior angles of a right triangle?
180 degrees
The area of a triangle is 32 cm2. The base of the triangle is 8 cm. What is the height of the triangle?
What is 8 cm.
The area of a rectangle is 48 in2 and the length is 12in. What is the width of the rectangle?
4 in.
Of a regular octagon what are the values of each interior angle?
There are 8 angles that equal 135 degrees
Triangle Angle Question
A triangle has two angles that measure 50° and 60°. What is the measure of the third angle?
70°
(The sum of angles in a triangle is 180° 180 - (50 + 60) = 70°)