Angle pairsAngles across a crossing
Name: Date:
Find the angle marked x. Give each answer in degrees.
1 degrees
2 degrees
3 degrees
4 degrees
5 degrees
6 degrees
7 degrees
8 degrees
Vertical angles worksheets
When two straight lines cross, the angles opposite each other are equal. These free printable worksheets draw the crossing and mark one angle x — the answer is the angle across from it, not a subtraction.
If they get stuck
Vertical angles
The answer key prints on a separate page.
What's on this sheet
Vertical angles are the case children get wrong on the mixed angle-pair page, because the answer is the number they were given rather than something taken away from it. Drilling them alone is how that instinct gets corrected: read the angle across the crossing and copy it.
Why this sheet works
Each figure shows two full lines crossing at a point, so four angles are formed and the two facing pairs are equal. The instruction and the figure agree that no arithmetic is needed, which is the whole lesson — a page where every answer required a subtraction would teach subtraction, not angle facts.
How this one works
One question from a sheet like this one, worked a step at a time — with a sentence saying what just happened and why.
Vertical angles, step by step