In this video we'll learn how to find the interior angle measures of triangles. We know that the three interior angles of a triangle will always sum of 180 degrees.

In this video we'll learn about angles around transversals, which are lines that intersect two other, parallel lines. We'll be able to identify vertical angles, but also supplementary angles, alternate interior angles, and alternate exterior angles.

In this video we'll learn how to find side lengths and interior angle measures of parallelograms, when we're given other measures of the parallelogram as algebraic expressions. We just have to remember that parallelograms are quadrilaterals (four-sided figures), in which opposite sides are congruent and parallel.

In this video we'll learn how to find side lengths and interior angle measures of quadrilaterals, when we're given other measures of the quadrilateral. Specifically, we'll look at parallelograms, rhombuses, and rectangles.

In this video we'll learn how to identify congruent angles of intersecting lines. Vertical angles (opposite angles) area always congruent.

In this video we'll define adjacent angles and identify adjacent and non-adjacent angles. Adjacent angles must share a vertex and one side, and must not have any of the same interior points.

In this video we'll learn how to arrange related conditional statements into a logical chain. The logical statements will be if-then statements, and we'll be looking to arrange them as If A, then B If B, then C If C, then D Therefore, if A, then D.

In this video we'll learn how to write the converse statements of conditional statements. Even if a conditional statement is always true, its converse statement may be true, but isn't necessarily always true. To write the converse statement, we just reverse the if part with the then part.

In this video we'll learn how to turn a statement into a conditional, if-then statement. Then we'll draw a Euler diagram that represents the conditional.

In this video we'll learn how to reflect figures in coordinate space, specifically, how to reflect them across the x-axis and y-axis. Reflection of a figure is a type of transformation of a figure, where we move it from one spot to another.