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![Geometry Problems, Online Education](../../problem/h_geometry_problem_810.jpg)
Geometry Problems 1381-1390.
Level: High School, College
![GoGeometry problems 1381-1390](geometry_problems_1381_1390_5.jpg) |
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Geometry Problems 1381 - 1390
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![Geometry problems 1381-1390](geometry_problems_1381_1390_1.jpg) |
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![Problem 1381 Parallelogram, Triangle, Area](../../school-college/4/p1381-parallelogram-triangle-area-1.jpg) |
Geometry Problem 1381. Parallelogram, Exterior Point, Triangle, Area. |
![Conformal mapping of problem 1381](../../school-college/4/p1381-parallelogram-triangle-art-conformal-mapping-transformation-1.jpg) |
Conformal Mapping or Transformation of
Geometry Problem
1381. |
![Poster of Problem 1381 Parallelogram, Triangle, Area](../../school-college/4/p1381-parallelogram-triangle-area-poster-ipad-apps-sw-1.jpg) |
Poster of Geometry Problem 1381. |
![Problem 1382 Circle, Diameter, Radius, Perpendicular, Congruence](../../school-college/4/p1382-circle-diameter-perpendicular-congruence-tutoring-1.jpg) |
Geometry Problem 1382. Circle, Diameter, Radius, Perpendicular, Congruence. |
![Problem 1382 Circle, Diameter, Radius, Perpendicular, Congruence](../../school-college/4/p1382-circle-diameter-perpendicular-art-conformal-mapping-transformation-1.jpg) |
Conformal Mapping or Transformation of Problem
1382. |
![Problem 1383 Circle, Triangle](../../school-college/4/p1383-triangle-circle-midpoint-sum-product-secant-1.jpg) |
Geometry Problem 1383. Triangle, Median, Circle, Chord, Secant, Sum, Product. |
![Problem 1388 Circle, Triangle](../../school-college/4/p1384-triangle-circumcircle-orthocenter-bisector-90-degree-1.jpg) |
Geometry Problem 1384. Triangle, Orthocenter, Circle, Circumcircle, Angle Bisector, 90 Degree. |
![Problem 1385 Circle, Triangle](../../school-college/4/p1385-triangle-circumcircle-orthocenter-bisector-collinear-1.jpg) |
Geometry Problem 1385. Triangle, Orthocenter, Circle, Circumcircle, Angle Bisector, Midpoint, Collinear Points. |
![Problem 1386 Thabit ibn Qurra Theorem,Pythagorean Theorem to any triangle](../../school-college/4/p1386-triangle-thabit-ibn-qurra-similarity-pythagoras-1.jpg) |
Geometry Problem 1386. Thabit ibn Qurra (826 -901) Theorem and more conclusions, generalized Pythagorean Theorem to any triangle. |
![Problem 1386](../../school-college/4/p1386-triangle-thabit-ibn-qurra-pythagoras-art-spiral-1.jpg) |
Conformal Mapping or Transformation of Problem
1386. |
![Problem 1387 Quadrilateral, Double Angle, Congruence, Isosceles Triangle](../../school-college/4/p1387-quadrilateral-double-angle-isosceles-sum-tutoring-1.jpg) |
Geometry Problem 1387. Quadrilateral, Double Angle, Congruence, Isosceles Triangle. |
![Problem 1388 40-60-80 triangle](../../school-college/4/p1388-triangle-40-60-80-degree-incenter-side-congruence-1.jpg) |
Geometry Problem 1388. Triangle 40-60-80 degree, Incenter, Congruence. |
![Problem 1389 40-120-20 triangle](../../school-college/4/p1389-triangle-40-20-degree-angle-congruence-tutoring-1.jpg) |
Geometry Problem 1389. Triangle, 40-120-20 degree, Angle, Congruence. |
![Poster of Problem 1389](../../school-college/4/p1389-poster-triangle-40-20-degree-angle-congruence-ipad-sw-1.jpg) |
Poster of Geometry Problem 1389. |
![Problem 1390](../../school-college/4/p1390-triangle-point-perpendicular-sum-square-tutoring-1.jpg) |
Geometry Problem 1390. Triangle, any point, perpendicular, sum of the squares. |
![Geometry problems 1371-1380](geometry_problems_1361_1370_1.jpg)
![Geometry problems 1391-1400](geometry_problems_1391_1400_1.jpg)
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| by Antonio Gutierrez
Last updated:
Jan 6, 2019
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