Mathematics
Grade 7
15 min
Area of triangles
Area of triangles
What you'll learn
- Identify the slope and y-intercept of two parallel lines given their equations in slope-intercept form, and justify why the slopes are equal.
- Apply the formula for the distance between a point and a line to calculate the distance between two parallel lines, given their equations in standard form, with 80% accuracy on a quiz.
- Solve for the distance between two parallel lines by first finding a point on one line and then calculating its perpendicular distance to the other line, demonstrating the steps clearly and accurately in written form.
- Explain why the distance between two parallel lines is constant and independent of the specific point chosen on one of the lines, using geometric reasoning and algebraic representations.
Tutorial Preview
1
Find the area of a right triangle with base 6 and height 4.
2
Find the area of a triangle with base 8 and height 5.
3
Find the area of an obtuse triangle with base 5 and height 6.
Sample Practice Questions
Easy
What is the area of this right triangle?
0.10
1.20
2.7
3.14
Easy
Find the area of the triangle shown.
0.18
1.36
2.12
3.9
Easy
What is the area of this triangle?
0.14
1.28
2.11
3.22
Want to practice and check your answers?
Sign up to access all questions with instant feedback, explanations, and progress tracking.
Start Practicing FreeMore from Geometry, Area & Perimeter
Mathematics for other grades
Frequently asked questions
What grade level is "Area of triangles"?
Area of triangles is a Grade 7 Mathematics lesson on ExcelOS.
What will I learn in Area of triangles?
You'll be able to: Identify the slope and y-intercept of two parallel lines given their equations in slope-intercept form, and justify why the slopes are equal; Apply the formula for the distance between a point and a line to calculate the….
Is "Area of triangles" free to practice?
Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.
How many practice questions are included with Area of triangles?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.