# Problems

1 – 20 of 20
 Problem Title Likes Solvers Difficulty

#### Problem 635. Angle between Two Vectors

Created by: Richard Zapor

1

346

#### Problem 336. Similar Triangles - find the height of the tree

Created by: Bruce Raine

4

283

#### Problem 450. What is the distance from point P(x,y) to the line Ax + By + C = 0?

Created by: Bruce Raine

4

363

#### Problem 164. Right and wrong

Created by: the cyclist

Tags triangle

11

1227

#### Problem 637. Volume of a Parallelepiped

Created by: Richard Zapor

3

274

#### Problem 381. Angle between two vectors

Created by: Aurelien Queffurust

2

606

#### Problem 330. Circumscribed circles

Created by: Alan Chalker

Tags geometry

3

342

#### Problem 1072. Television Screen Dimensions

Created by: @bmtran (Bryant Tran)

6

363

5

404

#### Problem 554. Is the Point in a Circle?

Created by: Kuifeng

4

439

#### Problem 198. Are you in or are you out?

Created by: the cyclist

3

229

#### Problem 417. Covering area

Created by: Nikolai

4

128

#### Problem 190. Great Circle Distance

Created by: @bmtran (Bryant Tran)

1

130

#### Problem 392. Clock Hand Angle 1

Created by: @bmtran (Bryant Tran)

9

188

#### Problem 833. Find third Side of a right triangle given hypotenuse and a side. No * - or other functions allowed

Created by: Richard Zapor

5

177

#### Problem 769. Calculate the area of a triangle between three points

Tags math, triangle

28

2738

#### Problem 636. Spherical radius given four points

Created by: Richard Zapor

2

148

#### Problem 194. Clockwise or Counterclockwise

Created by: Alfonso Nieto-Castanon

Tags math, polygon

5

113

#### Problem 193. Smallest distance between a point and a rectangle

Created by: Alfonso Nieto-Castanon

Tags math, distance

8

175

#### Problem 1103. Right Triangle Side Lengths (Inspired by Project Euler Problem 39)

Created by: @bmtran (Bryant Tran)

33

1631

1 – 20 of 20