Congruent Triangles std8 Page-28.3 EM
📐 Geometry Problem | AB with Midpoint M | CD ∥ AB
AB = 6 cm | M is midpoint | ∠A = 40°, ∠B = 60° | CD ∥ AB (above)
🔵 AB = 6 cm, M is midpoint
🔷 CD ∥ AB (above)
📐 ∠A = 40°, ∠B = 60°
✍️ Analyze Quadrilaterals and Triangles
1 Quadrilateral AMCD
What type of quadrilateral is AMCD?
2 Reason for AMCD
Why is AMCD a parallelogram? (Given AM = MC? Actually need to check)
3 Quadrilateral MBCD
What type of quadrilateral is MBCD?
4 Reason for MBCD
Why is MBCD a parallelogram?
5 Triangle AMD - find ∠AMD
In ΔAMD, ∠A = 40°, AD is transversal. Find ∠AMD.
6 Triangle AMD - find ∠ADM
In ΔAMD, find ∠ADM (using angle sum property).
7 Triangle MBC - find ∠BMC
In ΔMBC, ∠B = 60°. Find ∠BMC.
8 Triangle MBC - find ∠BCM
In ΔMBC, find ∠BCM (using angle sum property).
9 Triangle DCM - find angles
In ΔDCM, find all three angles.
10 Final Summary
Select the correct summary of all angles.