Find missing angles in triangles and quadrilaterals
Find missing angles in triangles and quadrilaterals
What you'll learn
- Identify the variables and constants within a multi-variable expression with 80% accuracy.
- Substitute given values for variables in multi-variable expressions and simplify the expression using the order of operations in at least 4 out of 5 problems correctly.
- Solve multi-variable expressions involving addition, subtraction, multiplication, and division, demonstrating understanding by arriving at the correct numerical solution in 70% of the assigned problems.
- Explain the steps taken to evaluate a multi-variable expression, justifying each step with reference to the order of operations (PEMDAS/BODMAS) in a written explanation.
Tutorial Preview
Find the missing angle in a triangle with angles 50° and 60°.
Find the missing angle in a quadrilateral with angles 100°, 80°, and 90°.
An isosceles triangle has a top angle of 40°. Find the base angles.
Sample Practice Questions
Want to practice and check your answers?
Sign up to access all questions with instant feedback, explanations, and progress tracking.
Start Practicing FreeMore from Two dimensional figures
Mathematics for other grades
Frequently asked questions
What grade level is "Find missing angles in triangles and quadrilaterals"?
Find missing angles in triangles and quadrilaterals is a Grade 8 Mathematics lesson on ExcelOS.
What will I learn in Find missing angles in triangles and quadrilaterals?
You'll be able to: Identify the variables and constants within a multi-variable expression with 80% accuracy; Substitute given values for variables in multi-variable expressions and simplify the expression using the order of operations in at least….
Is "Find missing angles in triangles and quadrilaterals" 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 Find missing angles in triangles and quadrilaterals?
This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.