Question 8: A Single Right Angle

Author:Steve Phelps

In a spherical triangle, with exactly one right angle, (a) What are the possibilities for the two oblique (nonright) angles? (b) How can we think about the sides of the triangle?

New Resources

Squaring a Rectangle (PST Version)
Writing and Graphing Proportional Relationships (k>0)
Midpoint Theorem (V2): Integer Solutions
Building Algebra Tile Models for Trinomials
Right Triangle Inscribed in a Semicircle

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complex numbers - division
Locus of a point at a fixed distance from a line segment
Function Family Transformations
เรือเล็กควรออกจากฝั่ง
Exploring Perpendicular Bisectors

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Division
Cylinder
Dilation
Pie Chart or Circle Chart
Cube