# Tag Archives: triangle

## Algebra – Find the length of the sides of a triangle based on its perimeter and the ratio of its sides.

By | January 15, 2017

Ratios Word Problem In the following tutorial the students will learn how to find the length of the sides of a triangle based on its perimeter and the ratio of its sides in word problem format.

## Algebra – Find all the measures of the angles of an isosceles triangle when given 3 expressions for each angle

By | January 11, 2017

Isosceles Triangle Word Problem In this tutorial the students will learn how to find all the measure of the angles of an isosceles triangle when given 3 expressions for each angle in word problem format.

## Algebra – Find the altitude of a triangle when given its area and base

By | January 8, 2017

Triangle Word Problem In this tutorial the students will learn how to find the height/altitude of a triangle when given its area and base in word problem format.

## Geometry – Construct an Equilateral Triangle

By | November 21, 2016

Construct an Equilateral Triangle In this tutorial students learn how to use a compass and a straightedge to construct an equilateral triangle.  The students will be given a line segment to start. Related Tutorials

## Geometry – Construct a Median of a Triangle

By | November 17, 2016

Construct a Median of a Triangle In this tutorial the students will learn how to use a compass and a straightedge to construct a median of a triangle. A median of a triangle is a line segment that joins the vertex midpoint to the opposite side.  All triangles have 3 medians that intersect at the triangle’s… Read More »

## Geometry – Construct the circumcenter of a triangle

By | November 14, 2016

Construct the circumcenter of a triangle In this tutorial students learn how to use a compass and a straightedge to construct the circumcenter of a triangle.  The circumcenter can then be used to circumscribe the triangle. Related Tutorials

## Trigonometry – Sum and Difference Formulas of Sine and Cosine

By | September 15, 2016

Sum and Difference Formulas of Sine and Cosine In this tutorial student learn how to verify a trigonometric equation using trigonometric identities like the difference formula for sine and cosine. Virginia Standards of Learning (SOL) T.5 Key Points of Knowledge Sum and Difference Formulas cos (α + β) = cos (α) cos (β) – sin (α)… Read More »