Tangent Perimeter Challenge
Use equal tangents to rebuild all three sides of a triangle.
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Choose a maths challenge
Pick a chapter and solve one complete problem. Every challenge explains the reasoning in small steps, just like the learning apps.
Hidden AP Term Challenge
Turn two known terms into equations and jump to a later term.
Start challengeFast Elimination Challenge
Match coefficients, eliminate one variable, and verify the pair.
Start challengeRemainder to HCF Challenge
Turn unequal remainders into exact divisibility before finding an HCF.
Start challengeReciprocal Zeroes Challenge
Convert a reciprocal expression into sum and product of zeroes.
Start challengeTwo Roots, Not One Challenge
Factor a difference of squares and keep both roots.
Start challengeMatch the Similar Triangles Challenge
Find missing angles and match vertices in the correct order.
Start challengeSection Formula Balance Challenge
Weight the opposite endpoint correctly in an internal ratio.
Start challengeProve One Side Challenge
Transform one side of an identity without assuming the result.
Start challengeObserver Height Challenge
Build the right triangle from eye level, then restore observer height.
Start challengeShaded Ring Challenge
Subtract the inner circle before substituting values.
Start challengeHidden Faces Challenge
Count only exposed surfaces when two solids are joined.
Start challengeFind the Median Class Challenge
Locate the halfway observation using cumulative frequency.
Start challengeNeither Event Challenge
Count the excluded outcomes once, then use the complement.
Start challengeWant to explore before solving?
Read a short maths article, browse chapter guides, or visit the main Young Math Brains website.