Lessons | Skubes

# Search

Search keywords below. For longer search phrases or a broader
search use the magnifying glass in the upper right-hand corner.

The search found 115 results in 0.882 seconds.

## Derive Volume formula for Cylinder

00:00

Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems.

Give an informal argument for the formulas for the circumference of a circle, area of a circle, volume of a cylinder, pyramid, and cone.

Apply the formulas for the volume of cones, cylinders, and spheres and use them to solve real-world and mathematical problems.

## Volume of a Sphere

00:00

Use volume formulas for cylinders, pyramids, cones, and spheres to solve problems.

Know the formulas for the volumes of cones, cylinders, and spheres and use them to solve real-world and mathematical problems.

## Triangle Congruence - ASA

00:00

Explain how the criteria for triangle congruence (ASA, SAS, and SSS) follow from the definition of congruence in terms of rigid motions. (side side side, side angle side, angle side angle)nt.HSG-CO.B.8, CCSS.Math.Content.HSG-CO.B.7

## Intersection of a Radius and a Tangent Line

00:00

Construct a tangent line from a point outside a given circle to the circle.

Derive using similarity the fact that the length of the arc intercepted by an angle is proportional to the radius, and define the radian measure of the angle as the constant of proportionality; derive the formula for the area of a sector.

## Derive Area of a Circle

00:00

Derive the equation of a circle of given center and radius using the Pythagorean Theorem; complete the square to find the center and radius of a circle given by an equation.

Give informal arguments for the formulas of the circumference of a circle and area of a circle using dissection arguments and informal limit arguments.

## Interior Angles of a Triangle are 180 Degrees

00:00

G-CO.10
Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.

## Finding the Area of Polygons using Distance Formula

00:00

Use coordinates to compute perimeters of polygons and areas of triangles and rectangles, e.g., using the distance formula.

## Prove Isosceles Triangle Congruent

00:00

Prove theorems about triangles. Theorems include: measures of interior angles of a triangle sum to 180°; base angles of isosceles triangles are congruent; the segment joining midpoints of two sides of a triangle is parallel to the third side and half the length; the medians of a triangle meet at a point.

## Vertical Angles and there Applications

00:00

Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment’s endpoints.

## Same Side Interior Angles with Parallel Lines

00:00

Prove theorems about lines and angles. Theorems include: vertical angles are congruent; when a transversal crosses parallel lines, alternate interior angles are congruent and corresponding angles are congruent; points on a perpendicular bisector of a line segment are exactly those equidistant from the segment’s endpoints.