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Types of angles (age 13+)

PROCEDURAL
MathematicsGeometry|Ages 13—14|ID: mt_1VmTUxBrNd

Apply Pythagoras’ Theorem (a² + b² = c²) to calculate unknown side lengths in right-angled triangles, including in real-world and coordinate-geometry contexts

Mastery Evidence

  • Calculate the hypotenuse of a right-angled triangle given the two shorter sides
  • Find a shorter side given the hypotenuse and the other short side
  • Use Pythagoras’ Theorem to find the distance between two points on a coordinate grid

Assessment Prompt

“If [child] wants to check whether a shelf bracket makes a perfect right angle and the sides measure 30 cm, 40 cm, and 50 cm, can they use Pythagoras to verify?”

Curriculum Standards5 alignments

8.G.6Common Core State Standards for Mathematics
Proof of Pythagorean Theorem

Explain a proof of the Pythagorean Theorem and its converse.

G
8.G.7Common Core State Standards for Mathematics
Applying Pythagorean Theorem

Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

G
8.G.8Common Core State Standards for Mathematics
Distance in coordinate system

Apply the Pythagorean Theorem to find the distance between two points in a coordinate system.

G
KS3.Maths.Geo.13The national curriculum in England
Apply Angle Facts and Pythagoras' Theorem

apply angle facts, triangle congruence, similarity and properties of quadrilaterals to derive results about angles and sides, including Pythagoras' Theorem, and use known results to obtain simple proofs

Mathematics · Key Stage 3
KS3.Maths.Geo.14The national curriculum in England
Pythagoras' Theorem and Trigonometry

use Pythagoras' Theorem and trigonometric ratios in similar triangles to solve problems involving right-angled triangles

Mathematics · Key Stage 3

Prerequisites2

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