10th GradeMenu1Factor Quadratic ExpressionsActivity Set 12Find Inverse of a FunctionActivity Set 13Inverse FunctionsActivity Set 14Vertical Angles Are CongruentActivity Set 15Use similarity rules to find missing side lengthsActivity Set 16How do you prove that the medians of a triangle meet at a point?7How do you prove that opposite sides of a parallelogram are congruent?8How do you prove that opposite angles of a parallelogram are congruent?9How do you prove that base angles of isosceles triangles are congruent?10When are corresponding angles not congruent?11How do you use congruence and similarity criteria for triangles to prove relationships in geometric figures?12How do you prove that all circles are similar?13How do you prove that a line parallel to one side of a triangle divides the other two proportionally?14How do you prove the Pythagorean Theorem by using triangle similarity?15What is the connection with the sides of right triangles and the angles in the triangle?16How do you prove that the interior angles of a triangle sum to 180 degrees?How do you prove that the interior angles of a triangle sum to 180 degrees?Watch this video to learn why the interior angles of a triangle always sum up to 180°.0%DoneContinueActivity Set 117Swap sine and cosine using complementsActivity Set 118What Happens When You Dilate a Line That Doesn't Go Through the Center?19Why Are Diagonals of a Rectangle Congruent?20How do you use similarity transformations to determine if two figures are similar?21How do you use slope criteria for parallel and perpendicular lines to solve geometric problems?22How do you use coordinates to compute the perimeter of a polygon?23Rigid MotionsActivity Set 124Corresponding Angles and Parallel LinesActivity Set 125Inscribed trianglesActivity Set 126Inscribed quadrilaterals27Boss Battle
How do you prove that the interior angles of a triangle sum to 180 degrees?Watch this video to learn why the interior angles of a triangle always sum up to 180°.0%DoneContinue
