GeoGebra
GeoGebra
Home
News Feed
Resources
Profile
People
Classroom
App Downloads
Elements I: Proposition 14
Author:
Ryan Hirst
Topic:
Geometry
Euclid,
The Elements
, Book 1:
Proposition XIV:
Two lines which meet at a point and make angles equal to two right angles (180 degrees) are in a straight line with one another.
GeoGebra
New Resources
Woven
aperiodic monotile construction_step by step
Periodic Functions
Taylor Polynomial
What is an Isogonal Conjugate?
Discover Resources
ext. angles= 360
การบวกจำนวนเต็ม
question2
Steffen Congruent Figures: Dynamic Illustration
Baseball field at my school?
Discover Topics
Hypergeometric Distribution
Hypothesis Testing
Percentages
Arithmetic Mean
Fractal Geometry