# Tag Archives: triangle

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

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

## Geometry – Construct an Equilateral Triangle

## Geometry – Construct a Median of a Triangle

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

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

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 »