Circle TheoremsSix results that solve almost every circle question.10th GradeAngles and lines in circles follow fixedrelationships determined by the centre and thearcs they subtend.central angle = 2 × inscribed angleAngle in a semicircle90°Any triangle on the diameter is right-angled.Central vs inscribedcentral is doubleBoth standing on the same arc.Same arcinscribed angles equalWherever the vertex sits on the major arc.Tangent and radiusperpendicularA tangent meets the radius at 90°.Opposite angles in a cyclic quadrilateral add to 180°. That one getsforgotten most often.Circle Theoremswww.littleactivity.com

Full preview — nothing is watermarked or held back.

Math · 10th Grade

Circle Theorems

Six results that solve almost every circle question.

How to use it

Look for the diameter and for the centre. Both trigger specific theorems.

Free · print-ready PDF · US Letter and A4

Grade
10th Grade
Ages
15–16
Subject
Math
Pages
1

The rest of the 10th Grade wall

49 more posters, all free to print — 11 of them here.

Your Cart (0)

Your cart is empty

Browse our shop to find activities your kids will love