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
-