What is the formula for finding the area of a parallelogram?
Area = Base x height
What is the formula for finding the area of a triangle?
Area = base x height / 2
What type of angle is formed by two acute angles and whose measures equal 90?
Complementary
What is the sum of the interior angles of a triangle?
180 degrees
159 degrees

Find the area.
72 cm2
Base: 5 mm
Height: 10 mm
Find the area.
25 mm2

What type of angle is this and what do the measures equal?
Supplementary
180
Could you form a triangle with these measures?
42, 37, 100
Base: 4 mm
Height: 9 mm
Find the area of both a parallelogram and a triangle.
Parallelogram: 36 mm2
Triangle: 18 mm2

Find the area.
20 cm2
Height: 14 ft
Find the area.
49 ft2
What type of angle is formed by two intersecting lines and have the same measure because they are both supplementary to the same angle?
Vertical Angles
On a triangle:
Angle 1: 90
Angle 2: 45
Angle 3: x
Find x.
45
On a supplementary angle:
Angle 1: 147
Angle 2: x
Find x.
33 degrees

10 km
Area: 60 in2
Base: 15 in
Find the height.
8 in
Identify the type of angle if one measure is 61 degrees and the other measure is 29 degrees.
Complementary
On a triangle:
Angle 1: 18
Angle 2: x - 6
Angle 3: 59
Find x.
109
On a complementary angle:
Angle 1: x - 5
Angle 2: 48
Find x.
47 degrees
Base: 4 ft
Height 3 ft
Find the area of the parallelogram in inches2.
1,728 in2
Area: 32 mi2
Height: 8 mi
Find the base.
8 mi
On a supplementary angle:
Angle 1: 2x
Angle 2: 24
Find x.
78 degrees
On a triangle:
Angle 1: 55
Angle 2: 17
Angle 3: 4x
Find x.
27
On a triangle:
Angle 1: 15
Angle 2: 105
Angle 3: 2x
Find x.
30 degrees