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Curated Video
Identifying which circle theorem to use
Pupil outcome: I can analyse a circle problem and identify and use an appropriate circle theorem to solve it.
Key learning po
ints:
- There are many circle theorems so it is important to be clear abou
t each one
- Extra...
Key learning po
ints:
- There are many circle theorems so it is important to be clear abou
t each one
- Extra...
Curated Video
The alternate segment theorem
Pupil outcome: I can derive and use the theorem: the alternate segment theorem. Key learning points: - A theorem is a statement that can be demonstrated to be true by accepted mathematical operations and arguments - Theorems can be...
Curated Video
Diagonals of a rhombus
Pupil outcome: I can appreciate that the diagonals of a rhombus bisect one another at right angles and the angles are bisected. Key learning points: - An isosceles triangle has a line of symmetry that splits it into two congruent...
Curated Video
Determining which side
Pupil outcome: I can identify which side length is missing and use the appropriate form of Pythagoras' theorem to calculate it. Key learning points: - The hypotenuse is the side opposite the right angle. - It does not matter which of the...
Curated Video
The angle at the centre of the circle is twice the angle at any point on the circumference
Pupil outcome: I can derive and use the theorem: the angle at the centre of the circle is twice the angle at any point on the circumference. Key learning points: - A theorem is a statement that can be demonstrated to be true by accepted...
Curated Video
Circle Proofs (Arc and Angle Relationships)
How do you prove circle theorems? In this video, we perform some "lazy" proofs that justify some of the relationships like the relationship between an inscribed angle and a central angle, the angle formed by intersecting secants, the...
Curated Video
Solving Circle Angle Problems
This video shows the process for solving the problem presented in IGCSE A June 2018 paper 2H Q20, which involves circle angles. Students will understand the properties of angles in circles and how to calculate their sizes. They will...
Curated Video
GCSE Secondary Maths Age 13-17 - Geometry & Measures: Isosceles Triangle - Explained
SchoolOnline's Secondary Maths videos are brilliant, bite-size tutorial videos delivered by examiners. Ideal for ages 13-17, they cover every key topic and sub topic covered in GCSE Maths in clear and easy to follow...
Cerebellum
Geometry - Proofs continued
Understand and making sense of geometry: Proofs continued. This is part 3 from the series 'Geometry Program'.
Tarver Academy
6-6 Properties of Kites and Trapezoids - GEOMETRY
In This Episode, Tyler Teaches Us About Properties of Kites and Trapezoids - Geometry
Khan Academy
SAT Prep: Test 4 Section 2 Part 5
Picking up where he left off (problem 17), Sal demonstrates graphing functions with an informative and clear explanation. Additionally, problem 18 involves finding the values of angles in an equilateral triangle.
Khan Academy
SAT Prep: Test 3 Section 4 Part 4
Adding the values of angles, deciphering fraction word problems, and solving complex linear equations are all in a day's work for Sal, who will stop at nothing to help your students pass the SAT. His clear annotations and strong...
Khan Academy
SAT Prep: Test 3 Section 4 Part 3
Continuing his lessons on the practice SAT, Sal takes students through problems 10-13, which involve absolute value, comparing angles in a geometric diagram, and finding the median number in a set of consecutive integers. Students will...
Sophia Learning
Sophia: Isosceles Triangles
Isosceles triangles are explored in this video tutorial. The lesson models the parts of an isosceles triangle and describes how to find missing angle measures. [5:06]
Art of Problem Solving
Art of Problem Solving: Angles in a Triangle Part 2
Video tutorial uses problems to reinforce understanding of angles in a triangle. (Part 2) [6:23]
Art of Problem Solving
Art of Problem Solving: Angles in a Triangle Part 1
Video tutorial uses problems to reinforce understanding that the angles in a triangle always add up to 180 degrees. (Part 1) [3:55]