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2. Find the Area of a Triangle Given 3 Points
Step 1:
Plot the points.
Step 2:
Find the base and height.
Step 3:
Substitute into area of a triangle formula.
Step 4:
Evaluate.
Step 5:
Write the units.
Point 1: (-8, -7)
Point 2: (4, -7)
Point 3: (4, -2)
Step 1:
Plot the points.
Area = 1 2 ⋅base⋅height
Area = 1 2 ⋅12⋅5
Step 3:
Substitute into area of a triangle formula.
Step 2:
Find the base
and height.
Area = 1 2 ⋅60
Step 4:
Evaluate.
Area =30
units2
5 = height
Step 5:
Write the units.
12 = base

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