• #### Space Diagonals - Problem 1

##### Math›Geometry›Pythagorean Theorem
How to find the length of the longest object that will fit inside a box.
• #### Radian Measure of Angles - Problem 1

##### Math›Trigonometry›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.
• #### Trigonometric Ratios: Tangent - Problem 1

##### Math›Precalculus›Basic Trigonometry
How to find the length of a side in a right triangle using the tangent ratio.
• #### Radian Measure of Angles - Problem 1

##### Math›Precalculus›Trigonometric Functions
How to measure a central angle of a circle when the radius and the length of the intercepted arc are given.
• #### Area and Perimeter of Rectangles - Problem 2

##### Math›Pre-Algebra›Introductory Geometry
Finding decimal approximations and exact areas and perimeters for parallelograms with square root side lengths
Tags:
• #### Isosceles Triangles - Problem 1

##### Math›Geometry›Triangles
How to solve for the side length and base angle measures of an isosceles triangle.
• #### Rectangle and Square Properties - Problem 1

##### Math›Geometry›Polygons
How to find the angles in a square created by drawing diagonals, and finding the lengths of those diagonals.
• #### Area of Regular Polygons - Problem 3

##### Math›Geometry›Area
How to calculate the perimeter of a regular polygon given the area and apothem length.
• #### Special Isosceles Triangle Properties - Problem 1

##### Math›Geometry›Triangles
How to find the measure of a missing length in an isosceles triangle with an altitude.
• #### Parallelogram Properties - Problem 3

##### Math›Geometry›Polygons
How to find the lengths of the diagonals in a parallelogram if they are given in terms of a variable.
• #### Chords and a Circle's Center - Problem 3

##### Math›Geometry›Circles
How to find the radius of a circle when the length of a chord and its distance to the center of the circle is given.
• #### Trapezoid Midsegment Properties - Problem 2

##### Math›Geometry›Polygons
How to find the length of the segments that divide the sides of a triangle into three congruent segments.
• #### Similar Triangles in Circles and Right Triangles - Problem 1

##### Math›Geometry›Similarity
How to find missing side lengths of triangles in a circle.
• #### Pythagorean Theorem Proofs - Problem 2

##### Math›Geometry›Pythagorean Theorem
How to use the Pythagorean Theorem to determine if a triangle is acute, right, or obtuse, given the lengths of the triangle.
• #### Converse of the Pythagorean Theorem - Problem 1

##### Math›Trigonometry›Pythagorean Theorem
How to use the converse of the Pythagorean Theorem to determine if a triangle is a right triangle given the lengths of the triangle.
• #### Pythagorean Theorem Proofs - Problem 2

##### Math›Trigonometry›Pythagorean Theorem
How to use the Pythagorean Theorem to determine if a triangle is acute, right, or obtuse, given the lengths of the triangle.
• #### Angle Bisectors and Opposite Side Ratios - Problem 1

##### Math›Geometry›Similarity
How to find a missing length created by a median in a triangle using a proportion.
• #### Trigonometric Ratios: Sine - Problem 1

##### Math›Geometry›Basic Trigonometry
How to find the sine of two angles in a right triangle given two side lengths.
• #### Proportional Segments Between Parallel Lines - Problem 1

##### Math›Geometry›Similarity
How to find a missing length in a triangle cut by a line parallel to a base.
• #### Angle Bisectors and Opposite Side Ratios - Concept

##### Math›Geometry›Similarity
How to relate the sides of an angle bisected and the lengths of the opposite side.