keystone

"communication of a secret"

"The artist drew a table that looked like a trapezoid, with its top and bottom edges parallel but different lengths. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"My grandmother taught me how to bake cookies when I was a child. "

"The combination of soft music and warm lighting created a relaxing atmosphere in the living room. "

"The teacher determined the rules for the classroom project, setting clear limits on the length of presentations. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The teacher was the projector of the new school fundraising project. "

"The teacher positioned the globe on the table so the students could see it easily. "

"The shelf is projecting about a foot from the wall. "

"The shortstop ranged deep into the hole to make the stop."

"The presentation about the new school rules was very clear and easy to understand. "