diff --git a/Grade 9/Math/MPM1DZ/Unit 4: Measurement and Geometry.md b/Grade 9/Math/MPM1DZ/Unit 4: Measurement and Geometry.md index 81566ff..75e30e6 100644 --- a/Grade 9/Math/MPM1DZ/Unit 4: Measurement and Geometry.md +++ b/Grade 9/Math/MPM1DZ/Unit 4: Measurement and Geometry.md @@ -21,7 +21,7 @@ 4. ```Complementary Angle Theorem``` (CAT) - The sum of two angles that add up to 90 degrees - - + - 5. ```Angle Sum of a Triangle Theorem``` (ASTT) - The sum of the three interior angles of any triangle is 180 degrees @@ -114,7 +114,7 @@ ## Median - Each median divides the triangle into 2 smaller triangles of equal area -- The centroid is exactly the way of each median from the vertex, or the way from the midpoint of the opposite side, or ```2:1``` ratio +- The centroid is exactly $`\dfrac{2}{3}`$the way of each median from the vertex, or $`\dfrac{1}{3}`$ the way from the midpoint of the opposite side, or ```2:1``` ratio - The three medians divide the triangle into ```6``` smaller triangles of equal area and ```3 pairs``` of congruent triangles -