VaaraVaara Classroom

Videos Practice Progress

Loading video…

Loading…

Loading video…

Draw an Extra Parallel Line to Unlock an Angle Problem

Ask Vaara

Your maths helper for this video

Loading…

Parallel and Intersecting Lines · Alternate and same-side interior angles · 3:08

You'll learn: Drawing an extra parallel line through a corner turns a hard angle problem into known angle pairs.

Up next

15 videos

Now playing

Draw an Extra Parallel Line to Unlock an Angle Problem

3:08

Playing

Draw an Extra Parallel Line to Unlock an Angle Problem

You'll learn: Drawing an extra parallel line through a corner turns a hard angle problem into known angle pairs.

Now playing

Same topic

Alternate and same-side interior angles

3

Why Are Alternate Interior Angles Equal on Parallel Lines?
3:13
Why Are Alternate Interior Angles Equal on Parallel Lines?
You'll learn: Alternate interior angles are equal because each equals the same corresponding angle.
Why Do Same-Side Interior Angles Add to 180°?
3:21
Why Do Same-Side Interior Angles Add to 180°?
You'll learn: One same-side interior angle equals the angle forming a linear pair with the other, so the two add to 180°.
Find Missing Angles in a Parallel-Line Diagram
3:08
Find Missing Angles in a Parallel-Line Diagram
You'll learn: Chain corresponding, alternate and linear-pair facts to find missing angles.

Next topic

Parallel illusions

1

Are These Lines Really Parallel—or Is It an Illusion?
3:22
Are These Lines Really Parallel—or Is It an Illusion?
You'll learn: Optical illusions can make parallel lines look bent; check with measurements and angle facts.

Next topic

Parallel and Intersecting Lines

11

Will These Lines Meet If We Extend Them?
3:36
Will These Lines Meet If We Extend Them?
You'll learn: Will These Lines Meet If We Extend Them?
Four Angles at an Intersection: Measure and Look for Patterns
3:38
Four Angles at an Intersection: Measure and Look for Patterns
You'll learn: Four Angles at an Intersection: Measure and Look for Patterns
Linear Pairs: Why Adjacent Angles Add to 180 Degrees
3:29
Linear Pairs: Why Adjacent Angles Add to 180 Degrees
You'll learn: Linear Pairs: Why Adjacent Angles Add to 180 Degrees
Why Vertically Opposite Angles Are Equal
3:25
Why Vertically Opposite Angles Are Equal
You'll learn: Why Vertically Opposite Angles Are Equal
Why Measurements May Differ from Geometric Predictions
3:44
Why Measurements May Differ from Geometric Predictions
You'll learn: Why Measurements May Differ from Geometric Predictions
Four Equal Angles: Recognising Perpendicular Lines
3:26
Four Equal Angles: Recognising Perpendicular Lines
You'll learn: Four Equal Angles: Recognising Perpendicular Lines
Describing How Line Segments Meet
3:43
Describing How Line Segments Meet
You'll learn: Describing How Line Segments Meet
What Makes Two Lines Parallel?
3:36
What Makes Two Lines Parallel?
You'll learn: What Makes Two Lines Parallel?
Finding Sets of Parallel Lines in a Drawing
3:28
Finding Sets of Parallel Lines in a Drawing
You'll learn: Finding Sets of Parallel Lines in a Drawing
Repeated Paper Folds: Parallel Creases and a Counting Pattern
3:38
Repeated Paper Folds: Parallel Creases and a Counting Pattern
You'll learn: Repeated Paper Folds: Parallel Creases and a Counting Pattern
Making Parallel Diagonal Folds and Folded Triangles
3:39
Making Parallel Diagonal Folds and Folded Triangles
You'll learn: Making Parallel Diagonal Folds and Folded Triangles