课爱
classai
中文
Topics
› Geometry
Geometry
Angles in triangles, quadrilaterals and other figures.
Parallelogram · finding an unknown angle
· P6
Mei Ling drew a parallelogram ABCD in art class and drew the diagonal AC. Given that ∠ABC = 70° and ∠BAC = 45…
Geometry · isosceles triangles and angles on a straight line
· P6
Siti pasted two triangles on a straight line during art class. B, C and D lie on a straight line, AB = AC and…
Folding · equal angles
· P6
Mei Ling made a rectangular bookmark ABCD, where AB ∥ CD. She folded the bookmark along the line EF, meeting …
Parallel lines and angles in triangles
· P6
Ali is making a trapezium frame ABCD for the class notice board. AB // DC, and diagonal BD is drawn. Given th…
Rhombus · angle with a diagonal
· P6
Ali put up a rhombus-shaped paper PQRS in the Maths Corner and drew diagonal PR. Given that ∠PQR = 112°, find…
Angles · straight line and vertically opposite angles
· P6
Mei Ling drew a design in her notebook. Two straight lines AB and CD intersect at O. Ray OE is inside ∠AOC. G…
Practise this topic on classai →